Home / 87,028.64-130,329.24-42,511.88

Finding the Fourth Proportional to 87,028.64, 130,329.24 and 42,511.88

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Solution

The fourth proportional to 87,028.64, 130,329.24 and 42,511.88 is: 63,663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,028.64 : 130,329.24 = 42,511.88 : x
  2. Step 2: Convert to fraction form
    87,028.64/130,329.24 = 42,511.88/x
  3. Step 3: Cross multiply
    87,028.64x = 130,329.24 × 42,511.88
  4. Step 4: Simplify right side
    87,028.64x = 5,540,541,011.37
  5. Step 5: Solve for x
    x = 5,540,541,011.37/87,028.64
  6. Step 6: Final answer
    x = 63,663.42

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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.