Home / 71,207.13-106,785.15-21,277.92

Finding the Fourth Proportional to 71,207.13, 106,785.15 and 21,277.92

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Solution

The fourth proportional to 71,207.13, 106,785.15 and 21,277.92 is: 31,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,207.13 : 106,785.15 = 21,277.92 : x
  2. Step 2: Convert to fraction form
    71,207.13/106,785.15 = 21,277.92/x
  3. Step 3: Cross multiply
    71,207.13x = 106,785.15 × 21,277.92
  4. Step 4: Simplify right side
    71,207.13x = 2,272,165,878.89
  5. Step 5: Solve for x
    x = 2,272,165,878.89/71,207.13
  6. Step 6: Final answer
    x = 31,909.25

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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.