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Finding the Fourth Proportional to 60,523.80, 90,764.10 and 21,082.20

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Solution

The fourth proportional to 60,523.80, 90,764.10 and 21,082.20 is: 31,615.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,523.80 : 90,764.10 = 21,082.20 : x
  2. Step 2: Convert to fraction form
    60,523.80/90,764.10 = 21,082.20/x
  3. Step 3: Cross multiply
    60,523.80x = 90,764.10 × 21,082.20
  4. Step 4: Simplify right side
    60,523.80x = 1,913,506,909.02
  5. Step 5: Solve for x
    x = 1,913,506,909.02/60,523.80
  6. Step 6: Final answer
    x = 31,615.78

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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.