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Finding the Fourth Proportional to 47,794.60, 71,691.90 and 40,191.40

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Solution

The fourth proportional to 47,794.60, 71,691.90 and 40,191.40 is: 60,287.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,794.60 : 71,691.90 = 40,191.40 : x
  2. Step 2: Convert to fraction form
    47,794.60/71,691.90 = 40,191.40/x
  3. Step 3: Cross multiply
    47,794.60x = 71,691.90 × 40,191.40
  4. Step 4: Simplify right side
    47,794.60x = 2,881,397,829.66
  5. Step 5: Solve for x
    x = 2,881,397,829.66/47,794.60
  6. Step 6: Final answer
    x = 60,287.10

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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.