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Finding the Fourth Proportional to 80,545.80, 120,818.70 and 55,662.60

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Solution

The fourth proportional to 80,545.80, 120,818.70 and 55,662.60 is: 83,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,545.80 : 120,818.70 = 55,662.60 : x
  2. Step 2: Convert to fraction form
    80,545.80/120,818.70 = 55,662.60/x
  3. Step 3: Cross multiply
    80,545.80x = 120,818.70 × 55,662.60
  4. Step 4: Simplify right side
    80,545.80x = 6,725,082,970.62
  5. Step 5: Solve for x
    x = 6,725,082,970.62/80,545.80
  6. Step 6: Final answer
    x = 83,493.90

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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.