Home / 86,147.28-129,253.32-29,991.60

Finding the Fourth Proportional to 86,147.28, 129,253.32 and 29,991.60

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Solution

The fourth proportional to 86,147.28, 129,253.32 and 29,991.60 is: 44,998.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,147.28 : 129,253.32 = 29,991.60 : x
  2. Step 2: Convert to fraction form
    86,147.28/129,253.32 = 29,991.60/x
  3. Step 3: Cross multiply
    86,147.28x = 129,253.32 × 29,991.60
  4. Step 4: Simplify right side
    86,147.28x = 3,876,513,872.11
  5. Step 5: Solve for x
    x = 3,876,513,872.11/86,147.28
  6. Step 6: Final answer
    x = 44,998.68

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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.