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Finding the Fourth Proportional to 71,539, 107,310.52 and 18,948.52

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Solution

The fourth proportional to 71,539, 107,310.52 and 18,948.52 is: 28,423.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,539 : 107,310.52 = 18,948.52 : x
  2. Step 2: Convert to fraction form
    71,539/107,310.52 = 18,948.52/x
  3. Step 3: Cross multiply
    71,539x = 107,310.52 × 18,948.52
  4. Step 4: Simplify right side
    71,539x = 2,033,375,534.43
  5. Step 5: Solve for x
    x = 2,033,375,534.43/71,539
  6. Step 6: Final answer
    x = 28,423.32

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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.