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Finding the Fourth Proportional to 73,248.60, 109,872.90 and 67,999.80

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Solution

The fourth proportional to 73,248.60, 109,872.90 and 67,999.80 is: 101,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,248.60 : 109,872.90 = 67,999.80 : x
  2. Step 2: Convert to fraction form
    73,248.60/109,872.90 = 67,999.80/x
  3. Step 3: Cross multiply
    73,248.60x = 109,872.90 × 67,999.80
  4. Step 4: Simplify right side
    73,248.60x = 7,471,335,225.42
  5. Step 5: Solve for x
    x = 7,471,335,225.42/73,248.60
  6. Step 6: Final answer
    x = 101,999.70

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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.