Home / 86,108.28-129,158.82-29,961.12

Finding the Fourth Proportional to 86,108.28, 129,158.82 and 29,961.12

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Solution

The fourth proportional to 86,108.28, 129,158.82 and 29,961.12 is: 44,940.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,108.28 : 129,158.82 = 29,961.12 : x
  2. Step 2: Convert to fraction form
    86,108.28/129,158.82 = 29,961.12/x
  3. Step 3: Cross multiply
    86,108.28x = 129,158.82 × 29,961.12
  4. Step 4: Simplify right side
    86,108.28x = 3,869,742,905.08
  5. Step 5: Solve for x
    x = 3,869,742,905.08/86,108.28
  6. Step 6: Final answer
    x = 44,940.43

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Similar ratio
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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.