Home / 83,731.79-115,517.14-47,902.61

Finding the Fourth Proportional to 83,731.79, 115,517.14 and 47,902.61

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Solution

The fourth proportional to 83,731.79, 115,517.14 and 47,902.61 is: 66,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,731.79 : 115,517.14 = 47,902.61 : x
  2. Step 2: Convert to fraction form
    83,731.79/115,517.14 = 47,902.61/x
  3. Step 3: Cross multiply
    83,731.79x = 115,517.14 × 47,902.61
  4. Step 4: Simplify right side
    83,731.79x = 5,533,571,808.39
  5. Step 5: Solve for x
    x = 5,533,571,808.39/83,731.79
  6. Step 6: Final answer
    x = 66,086.87

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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.