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Finding the Fourth Proportional to 80,555.40, 120,717.90 and 59,329.80

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Solution

The fourth proportional to 80,555.40, 120,717.90 and 59,329.80 is: 88,909.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,555.40 : 120,717.90 = 59,329.80 : x
  2. Step 2: Convert to fraction form
    80,555.40/120,717.90 = 59,329.80/x
  3. Step 3: Cross multiply
    80,555.40x = 120,717.90 × 59,329.80
  4. Step 4: Simplify right side
    80,555.40x = 7,162,168,863.42
  5. Step 5: Solve for x
    x = 7,162,168,863.42/80,555.40
  6. Step 6: Final answer
    x = 88,909.85

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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.