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Finding the Fourth Proportional to 80,631.60, 120,817.80 and 59,636.40

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Solution

The fourth proportional to 80,631.60, 120,817.80 and 59,636.40 is: 89,358.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,631.60 : 120,817.80 = 59,636.40 : x
  2. Step 2: Convert to fraction form
    80,631.60/120,817.80 = 59,636.40/x
  3. Step 3: Cross multiply
    80,631.60x = 120,817.80 × 59,636.40
  4. Step 4: Simplify right side
    80,631.60x = 7,205,138,647.92
  5. Step 5: Solve for x
    x = 7,205,138,647.92/80,631.60
  6. Step 6: Final answer
    x = 89,358.75

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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.