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Finding the Fourth Proportional to 84,498, 126,748.80 and 31,932.24

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Solution

The fourth proportional to 84,498, 126,748.80 and 31,932.24 is: 47,899.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,498 : 126,748.80 = 31,932.24 : x
  2. Step 2: Convert to fraction form
    84,498/126,748.80 = 31,932.24/x
  3. Step 3: Cross multiply
    84,498x = 126,748.80 × 31,932.24
  4. Step 4: Simplify right side
    84,498x = 4,047,373,101.31
  5. Step 5: Solve for x
    x = 4,047,373,101.31/84,498
  6. Step 6: Final answer
    x = 47,899.04

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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.