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Finding the Fourth Proportional to 80,711.46, 121,086.60 and 25,307.46

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Solution

The fourth proportional to 80,711.46, 121,086.60 and 25,307.46 is: 37,967.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,711.46 : 121,086.60 = 25,307.46 : x
  2. Step 2: Convert to fraction form
    80,711.46/121,086.60 = 25,307.46/x
  3. Step 3: Cross multiply
    80,711.46x = 121,086.60 × 25,307.46
  4. Step 4: Simplify right side
    80,711.46x = 3,064,394,286.04
  5. Step 5: Solve for x
    x = 3,064,394,286.04/80,711.46
  6. Step 6: Final answer
    x = 37,967.28

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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.