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Finding the Fourth Proportional to 67,902.30, 101,893.14 and 28,456.11

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Solution

The fourth proportional to 67,902.30, 101,893.14 and 28,456.11 is: 42,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,902.30 : 101,893.14 = 28,456.11 : x
  2. Step 2: Convert to fraction form
    67,902.30/101,893.14 = 28,456.11/x
  3. Step 3: Cross multiply
    67,902.30x = 101,893.14 × 28,456.11
  4. Step 4: Simplify right side
    67,902.30x = 2,899,482,400.09
  5. Step 5: Solve for x
    x = 2,899,482,400.09/67,902.30
  6. Step 6: Final answer
    x = 42,700.80

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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.