Home / 87,331.10-130,996.64-69,718.46

Finding the Fourth Proportional to 87,331.10, 130,996.64 and 69,718.46

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Solution

The fourth proportional to 87,331.10, 130,996.64 and 69,718.46 is: 104,577.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,331.10 : 130,996.64 = 69,718.46 : x
  2. Step 2: Convert to fraction form
    87,331.10/130,996.64 = 69,718.46/x
  3. Step 3: Cross multiply
    87,331.10x = 130,996.64 × 69,718.46
  4. Step 4: Simplify right side
    87,331.10x = 9,132,883,525.29
  5. Step 5: Solve for x
    x = 9,132,883,525.29/87,331.10
  6. Step 6: Final answer
    x = 104,577.68

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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.