Home / 87,126.12-130,689.30-57,730.68

Finding the Fourth Proportional to 87,126.12, 130,689.30 and 57,730.68

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Solution

The fourth proportional to 87,126.12, 130,689.30 and 57,730.68 is: 86,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,126.12 : 130,689.30 = 57,730.68 : x
  2. Step 2: Convert to fraction form
    87,126.12/130,689.30 = 57,730.68/x
  3. Step 3: Cross multiply
    87,126.12x = 130,689.30 × 57,730.68
  4. Step 4: Simplify right side
    87,126.12x = 7,544,782,157.72
  5. Step 5: Solve for x
    x = 7,544,782,157.72/87,126.12
  6. Step 6: Final answer
    x = 86,596.10

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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.