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Finding the Fourth Proportional to 42,451.68, 63,365.88 and 39,324

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Solution

The fourth proportional to 42,451.68, 63,365.88 and 39,324 is: 58,697.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,451.68 : 63,365.88 = 39,324 : x
  2. Step 2: Convert to fraction form
    42,451.68/63,365.88 = 39,324/x
  3. Step 3: Cross multiply
    42,451.68x = 63,365.88 × 39,324
  4. Step 4: Simplify right side
    42,451.68x = 2,491,799,865.12
  5. Step 5: Solve for x
    x = 2,491,799,865.12/42,451.68
  6. Step 6: Final answer
    x = 58,697.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.