Home / 87,281.72-120,448.86-49,555.97

Finding the Fourth Proportional to 87,281.72, 120,448.86 and 49,555.97

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Solution

The fourth proportional to 87,281.72, 120,448.86 and 49,555.97 is: 68,387.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,281.72 : 120,448.86 = 49,555.97 : x
  2. Step 2: Convert to fraction form
    87,281.72/120,448.86 = 49,555.97/x
  3. Step 3: Cross multiply
    87,281.72x = 120,448.86 × 49,555.97
  4. Step 4: Simplify right side
    87,281.72x = 5,968,960,393.82
  5. Step 5: Solve for x
    x = 5,968,960,393.82/87,281.72
  6. Step 6: Final answer
    x = 68,387.29

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1.5x scale

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.