Home / 87,238.96-130,875.72-31,839.28

Finding the Fourth Proportional to 87,238.96, 130,875.72 and 31,839.28

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Solution

The fourth proportional to 87,238.96, 130,875.72 and 31,839.28 is: 47,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,238.96 : 130,875.72 = 31,839.28 : x
  2. Step 2: Convert to fraction form
    87,238.96/130,875.72 = 31,839.28/x
  3. Step 3: Cross multiply
    87,238.96x = 130,875.72 × 31,839.28
  4. Step 4: Simplify right side
    87,238.96x = 4,166,988,694.28
  5. Step 5: Solve for x
    x = 4,166,988,694.28/87,238.96
  6. Step 6: Final answer
    x = 47,765.23

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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.