Home / 42,123,218.16-63,208,142.28-20,557,998.48

Finding the Fourth Proportional to 42,123,218.16, 63,208,142.28 and 20,557,998.48

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Solution

The fourth proportional to 42,123,218.16, 63,208,142.28 and 20,557,998.48 is: 30,848,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,123,218.16 : 63,208,142.28 = 20,557,998.48 : x
  2. Step 2: Convert to fraction form
    42,123,218.16/63,208,142.28 = 20,557,998.48/x
  3. Step 3: Cross multiply
    42,123,218.16x = 63,208,142.28 × 20,557,998.48
  4. Step 4: Simplify right side
    42,123,218.16x = 1,299,432,892,915,863.75
  5. Step 5: Solve for x
    x = 1,299,432,892,915,863.75/42,123,218.16
  6. Step 6: Final answer
    x = 30,848,376.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.