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Finding the Fourth Proportional to 80,771.40, 121,041.90 and 59,545.80

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Solution

The fourth proportional to 80,771.40, 121,041.90 and 59,545.80 is: 89,233.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,771.40 : 121,041.90 = 59,545.80 : x
  2. Step 2: Convert to fraction form
    80,771.40/121,041.90 = 59,545.80/x
  3. Step 3: Cross multiply
    80,771.40x = 121,041.90 × 59,545.80
  4. Step 4: Simplify right side
    80,771.40x = 7,207,536,769.02
  5. Step 5: Solve for x
    x = 7,207,536,769.02/80,771.40
  6. Step 6: Final answer
    x = 89,233.77

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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.