Home / 87,819.10-121,189.02-49,057.43

Finding the Fourth Proportional to 87,819.10, 121,189.02 and 49,057.43

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Solution

The fourth proportional to 87,819.10, 121,189.02 and 49,057.43 is: 67,698.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,819.10 : 121,189.02 = 49,057.43 : x
  2. Step 2: Convert to fraction form
    87,819.10/121,189.02 = 49,057.43/x
  3. Step 3: Cross multiply
    87,819.10x = 121,189.02 × 49,057.43
  4. Step 4: Simplify right side
    87,819.10x = 5,945,221,536.06
  5. Step 5: Solve for x
    x = 5,945,221,536.06/87,819.10
  6. Step 6: Final answer
    x = 67,698.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.