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Finding the Fourth Proportional to 71,932.93, 99,265.16 and 39,668.91

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Solution

The fourth proportional to 71,932.93, 99,265.16 and 39,668.91 is: 54,741.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,932.93 : 99,265.16 = 39,668.91 : x
  2. Step 2: Convert to fraction form
    71,932.93/99,265.16 = 39,668.91/x
  3. Step 3: Cross multiply
    71,932.93x = 99,265.16 × 39,668.91
  4. Step 4: Simplify right side
    71,932.93x = 3,937,740,797.35
  5. Step 5: Solve for x
    x = 3,937,740,797.35/71,932.93
  6. Step 6: Final answer
    x = 54,741.84

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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.