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Finding the Fourth Proportional to 57,655.80, 86,532.30 and 28,098.90

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Solution

The fourth proportional to 57,655.80, 86,532.30 and 28,098.90 is: 42,172.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,655.80 : 86,532.30 = 28,098.90 : x
  2. Step 2: Convert to fraction form
    57,655.80/86,532.30 = 28,098.90/x
  3. Step 3: Cross multiply
    57,655.80x = 86,532.30 × 28,098.90
  4. Step 4: Simplify right side
    57,655.80x = 2,431,462,444.47
  5. Step 5: Solve for x
    x = 2,431,462,444.47/57,655.80
  6. Step 6: Final answer
    x = 42,172.04

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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.