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Finding the Fourth Proportional to 72,149.49, 108,235.85 and 22,229.55

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Solution

The fourth proportional to 72,149.49, 108,235.85 and 22,229.55 is: 33,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,149.49 : 108,235.85 = 22,229.55 : x
  2. Step 2: Convert to fraction form
    72,149.49/108,235.85 = 22,229.55/x
  3. Step 3: Cross multiply
    72,149.49x = 108,235.85 × 22,229.55
  4. Step 4: Simplify right side
    72,149.49x = 2,406,034,128.22
  5. Step 5: Solve for x
    x = 2,406,034,128.22/72,149.49
  6. Step 6: Final answer
    x = 33,347.90

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1.5x scale

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.