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Finding the Fourth Proportional to 72,924.46, 109,387.58 and 20,330.76

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Solution

The fourth proportional to 72,924.46, 109,387.58 and 20,330.76 is: 30,496.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,924.46 : 109,387.58 = 20,330.76 : x
  2. Step 2: Convert to fraction form
    72,924.46/109,387.58 = 20,330.76/x
  3. Step 3: Cross multiply
    72,924.46x = 109,387.58 × 20,330.76
  4. Step 4: Simplify right side
    72,924.46x = 2,223,932,635.96
  5. Step 5: Solve for x
    x = 2,223,932,635.96/72,924.46
  6. Step 6: Final answer
    x = 30,496.39

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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.