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Finding the Fourth Proportional to 84,819.80, 127,249.68 and 25,655.96

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Solution

The fourth proportional to 84,819.80, 127,249.68 and 25,655.96 is: 38,489.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,819.80 : 127,249.68 = 25,655.96 : x
  2. Step 2: Convert to fraction form
    84,819.80/127,249.68 = 25,655.96/x
  3. Step 3: Cross multiply
    84,819.80x = 127,249.68 × 25,655.96
  4. Step 4: Simplify right side
    84,819.80x = 3,264,712,700.09
  5. Step 5: Solve for x
    x = 3,264,712,700.09/84,819.80
  6. Step 6: Final answer
    x = 38,489.98

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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.