Home / 74,215.28-102,419.70-42,383.60

Finding the Fourth Proportional to 74,215.28, 102,419.70 and 42,383.60

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Solution

The fourth proportional to 74,215.28, 102,419.70 and 42,383.60 is: 58,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,215.28 : 102,419.70 = 42,383.60 : x
  2. Step 2: Convert to fraction form
    74,215.28/102,419.70 = 42,383.60/x
  3. Step 3: Cross multiply
    74,215.28x = 102,419.70 × 42,383.60
  4. Step 4: Simplify right side
    74,215.28x = 4,340,915,596.92
  5. Step 5: Solve for x
    x = 4,340,915,596.92/74,215.28
  6. Step 6: Final answer
    x = 58,490.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.