Home / 87,163.11-130,760.05-45,031.47

Finding the Fourth Proportional to 87,163.11, 130,760.05 and 45,031.47

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Solution

The fourth proportional to 87,163.11, 130,760.05 and 45,031.47 is: 67,555.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,163.11 : 130,760.05 = 45,031.47 : x
  2. Step 2: Convert to fraction form
    87,163.11/130,760.05 = 45,031.47/x
  3. Step 3: Cross multiply
    87,163.11x = 130,760.05 × 45,031.47
  4. Step 4: Simplify right side
    87,163.11x = 5,888,316,991.39
  5. Step 5: Solve for x
    x = 5,888,316,991.39/87,163.11
  6. Step 6: Final answer
    x = 67,555.15

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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.