Home / 86,119.38-129,101.22-30,702.42

Finding the Fourth Proportional to 86,119.38, 129,101.22 and 30,702.42

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Solution

The fourth proportional to 86,119.38, 129,101.22 and 30,702.42 is: 46,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,119.38 : 129,101.22 = 30,702.42 : x
  2. Step 2: Convert to fraction form
    86,119.38/129,101.22 = 30,702.42/x
  3. Step 3: Cross multiply
    86,119.38x = 129,101.22 × 30,702.42
  4. Step 4: Simplify right side
    86,119.38x = 3,963,719,878.95
  5. Step 5: Solve for x
    x = 3,963,719,878.95/86,119.38
  6. Step 6: Final answer
    x = 46,025.88

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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.