Home / 42,909-64,363.38-15,187.56

Finding the Fourth Proportional to 42,909, 64,363.38 and 15,187.56

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Solution

The fourth proportional to 42,909, 64,363.38 and 15,187.56 is: 22,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,909 : 64,363.38 = 15,187.56 : x
  2. Step 2: Convert to fraction form
    42,909/64,363.38 = 15,187.56/x
  3. Step 3: Cross multiply
    42,909x = 64,363.38 × 15,187.56
  4. Step 4: Simplify right side
    42,909x = 977,522,695.55
  5. Step 5: Solve for x
    x = 977,522,695.55/42,909
  6. Step 6: Final answer
    x = 22,781.30

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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.