Home / 87,020.64-130,355.28-57,365.28

Finding the Fourth Proportional to 87,020.64, 130,355.28 and 57,365.28

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Solution

The fourth proportional to 87,020.64, 130,355.28 and 57,365.28 is: 85,932.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,020.64 : 130,355.28 = 57,365.28 : x
  2. Step 2: Convert to fraction form
    87,020.64/130,355.28 = 57,365.28/x
  3. Step 3: Cross multiply
    87,020.64x = 130,355.28 × 57,365.28
  4. Step 4: Simplify right side
    87,020.64x = 7,477,867,136.68
  5. Step 5: Solve for x
    x = 7,477,867,136.68/87,020.64
  6. Step 6: Final answer
    x = 85,932.11

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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.