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Finding the Fourth Proportional to 71,387.40, 107,081.87 and 29,256.68

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Solution

The fourth proportional to 71,387.40, 107,081.87 and 29,256.68 is: 43,885.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,387.40 : 107,081.87 = 29,256.68 : x
  2. Step 2: Convert to fraction form
    71,387.40/107,081.87 = 29,256.68/x
  3. Step 3: Cross multiply
    71,387.40x = 107,081.87 × 29,256.68
  4. Step 4: Simplify right side
    71,387.40x = 3,132,859,322.70
  5. Step 5: Solve for x
    x = 3,132,859,322.70/71,387.40
  6. Step 6: Final answer
    x = 43,885.33

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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.