Home / 42,123.91-63,184.64-17,157.78

Finding the Fourth Proportional to 42,123.91, 63,184.64 and 17,157.78

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Solution

The fourth proportional to 42,123.91, 63,184.64 and 17,157.78 is: 25,736.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,123.91 : 63,184.64 = 17,157.78 : x
  2. Step 2: Convert to fraction form
    42,123.91/63,184.64 = 17,157.78/x
  3. Step 3: Cross multiply
    42,123.91x = 63,184.64 × 17,157.78
  4. Step 4: Simplify right side
    42,123.91x = 1,084,107,750.79
  5. Step 5: Solve for x
    x = 1,084,107,750.79/42,123.91
  6. Step 6: Final answer
    x = 25,736.16

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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.