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Finding the Fourth Proportional to 80,663.28, 120,905.22 and 60,877.68

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Solution

The fourth proportional to 80,663.28, 120,905.22 and 60,877.68 is: 91,248.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,663.28 : 120,905.22 = 60,877.68 : x
  2. Step 2: Convert to fraction form
    80,663.28/120,905.22 = 60,877.68/x
  3. Step 3: Cross multiply
    80,663.28x = 120,905.22 × 60,877.68
  4. Step 4: Simplify right side
    80,663.28x = 7,360,429,293.49
  5. Step 5: Solve for x
    x = 7,360,429,293.49/80,663.28
  6. Step 6: Final answer
    x = 91,248.82

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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.