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Finding the Fourth Proportional to 80,545.92, 120,808.32 and 21,385.92

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Solution

The fourth proportional to 80,545.92, 120,808.32 and 21,385.92 is: 32,076.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,545.92 : 120,808.32 = 21,385.92 : x
  2. Step 2: Convert to fraction form
    80,545.92/120,808.32 = 21,385.92/x
  3. Step 3: Cross multiply
    80,545.92x = 120,808.32 × 21,385.92
  4. Step 4: Simplify right side
    80,545.92x = 2,583,597,066.85
  5. Step 5: Solve for x
    x = 2,583,597,066.85/80,545.92
  6. Step 6: Final answer
    x = 32,076.08

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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.