Home / 87,306.26-130,969.05-31,159.46

Finding the Fourth Proportional to 87,306.26, 130,969.05 and 31,159.46

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Solution

The fourth proportional to 87,306.26, 130,969.05 and 31,159.46 is: 46,742.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,306.26 : 130,969.05 = 31,159.46 : x
  2. Step 2: Convert to fraction form
    87,306.26/130,969.05 = 31,159.46/x
  3. Step 3: Cross multiply
    87,306.26x = 130,969.05 × 31,159.46
  4. Step 4: Simplify right side
    87,306.26x = 4,080,924,874.71
  5. Step 5: Solve for x
    x = 4,080,924,874.71/87,306.26
  6. Step 6: Final answer
    x = 46,742.64

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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.