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Finding the Fourth Proportional to 80,959.50, 111,724.11 and 47,425.50

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Solution

The fourth proportional to 80,959.50, 111,724.11 and 47,425.50 is: 65,447.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,959.50 : 111,724.11 = 47,425.50 : x
  2. Step 2: Convert to fraction form
    80,959.50/111,724.11 = 47,425.50/x
  3. Step 3: Cross multiply
    80,959.50x = 111,724.11 × 47,425.50
  4. Step 4: Simplify right side
    80,959.50x = 5,298,571,778.81
  5. Step 5: Solve for x
    x = 5,298,571,778.81/80,959.50
  6. Step 6: Final answer
    x = 65,447.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.