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Finding the Fourth Proportional to 80,672.90, 120,750.15 and 57,344.90

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Solution

The fourth proportional to 80,672.90, 120,750.15 and 57,344.90 is: 85,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.90 : 120,750.15 = 57,344.90 : x
  2. Step 2: Convert to fraction form
    80,672.90/120,750.15 = 57,344.90/x
  3. Step 3: Cross multiply
    80,672.90x = 120,750.15 × 57,344.90
  4. Step 4: Simplify right side
    80,672.90x = 6,924,405,276.74
  5. Step 5: Solve for x
    x = 6,924,405,276.74/80,672.90
  6. Step 6: Final answer
    x = 85,833.10

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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.