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Finding the Fourth Proportional to 80,313.70, 120,470.55 and 38,841.70

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Solution

The fourth proportional to 80,313.70, 120,470.55 and 38,841.70 is: 58,262.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,313.70 : 120,470.55 = 38,841.70 : x
  2. Step 2: Convert to fraction form
    80,313.70/120,470.55 = 38,841.70/x
  3. Step 3: Cross multiply
    80,313.70x = 120,470.55 × 38,841.70
  4. Step 4: Simplify right side
    80,313.70x = 4,679,280,961.94
  5. Step 5: Solve for x
    x = 4,679,280,961.94/80,313.70
  6. Step 6: Final answer
    x = 58,262.55

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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.