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Finding the Fourth Proportional to 71,633.52, 107,515.98 and 38,391.12

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Solution

The fourth proportional to 71,633.52, 107,515.98 and 38,391.12 is: 57,621.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,633.52 : 107,515.98 = 38,391.12 : x
  2. Step 2: Convert to fraction form
    71,633.52/107,515.98 = 38,391.12/x
  3. Step 3: Cross multiply
    71,633.52x = 107,515.98 × 38,391.12
  4. Step 4: Simplify right side
    71,633.52x = 4,127,658,890.10
  5. Step 5: Solve for x
    x = 4,127,658,890.10/71,633.52
  6. Step 6: Final answer
    x = 57,621.89

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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.