Home / 87,713.48-121,046.10-49,988.36

Finding the Fourth Proportional to 87,713.48, 121,046.10 and 49,988.36

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Solution

The fourth proportional to 87,713.48, 121,046.10 and 49,988.36 is: 68,984.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,713.48 : 121,046.10 = 49,988.36 : x
  2. Step 2: Convert to fraction form
    87,713.48/121,046.10 = 49,988.36/x
  3. Step 3: Cross multiply
    87,713.48x = 121,046.10 × 49,988.36
  4. Step 4: Simplify right side
    87,713.48x = 6,050,896,023.40
  5. Step 5: Solve for x
    x = 6,050,896,023.40/87,713.48
  6. Step 6: Final answer
    x = 68,984.79

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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.