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Finding the Fourth Proportional to 80,951.40, 121,232.70 and 39,349.80

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Solution

The fourth proportional to 80,951.40, 121,232.70 and 39,349.80 is: 58,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,951.40 : 121,232.70 = 39,349.80 : x
  2. Step 2: Convert to fraction form
    80,951.40/121,232.70 = 39,349.80/x
  3. Step 3: Cross multiply
    80,951.40x = 121,232.70 × 39,349.80
  4. Step 4: Simplify right side
    80,951.40x = 4,770,482,498.46
  5. Step 5: Solve for x
    x = 4,770,482,498.46/80,951.40
  6. Step 6: Final answer
    x = 58,930.20

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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.