Home / 87,807.32-131,724.60-28,629.20

Finding the Fourth Proportional to 87,807.32, 131,724.60 and 28,629.20

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Solution

The fourth proportional to 87,807.32, 131,724.60 and 28,629.20 is: 42,948.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,807.32 : 131,724.60 = 28,629.20 : x
  2. Step 2: Convert to fraction form
    87,807.32/131,724.60 = 28,629.20/x
  3. Step 3: Cross multiply
    87,807.32x = 131,724.60 × 28,629.20
  4. Step 4: Simplify right side
    87,807.32x = 3,771,169,918.32
  5. Step 5: Solve for x
    x = 3,771,169,918.32/87,807.32
  6. Step 6: Final answer
    x = 42,948.24

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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.