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Finding the Fourth Proportional to 72,151.68, 108,227.64 and 30,031.20

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Solution

The fourth proportional to 72,151.68, 108,227.64 and 30,031.20 is: 45,046.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,151.68 : 108,227.64 = 30,031.20 : x
  2. Step 2: Convert to fraction form
    72,151.68/108,227.64 = 30,031.20/x
  3. Step 3: Cross multiply
    72,151.68x = 108,227.64 × 30,031.20
  4. Step 4: Simplify right side
    72,151.68x = 3,250,205,902.37
  5. Step 5: Solve for x
    x = 3,250,205,902.37/72,151.68
  6. Step 6: Final answer
    x = 45,046.85

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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.