Home / 86,251.13-129,335.72-30,084.42

Finding the Fourth Proportional to 86,251.13, 129,335.72 and 30,084.42

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Solution

The fourth proportional to 86,251.13, 129,335.72 and 30,084.42 is: 45,112.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,251.13 : 129,335.72 = 30,084.42 : x
  2. Step 2: Convert to fraction form
    86,251.13/129,335.72 = 30,084.42/x
  3. Step 3: Cross multiply
    86,251.13x = 129,335.72 × 30,084.42
  4. Step 4: Simplify right side
    86,251.13x = 3,890,990,121.48
  5. Step 5: Solve for x
    x = 3,890,990,121.48/86,251.13
  6. Step 6: Final answer
    x = 45,112.34

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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.