Home / 87,478.76-120,721.19-49,239.06

Finding the Fourth Proportional to 87,478.76, 120,721.19 and 49,239.06

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Solution

The fourth proportional to 87,478.76, 120,721.19 and 49,239.06 is: 67,950.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,478.76 : 120,721.19 = 49,239.06 : x
  2. Step 2: Convert to fraction form
    87,478.76/120,721.19 = 49,239.06/x
  3. Step 3: Cross multiply
    87,478.76x = 120,721.19 × 49,239.06
  4. Step 4: Simplify right side
    87,478.76x = 5,944,197,671.49
  5. Step 5: Solve for x
    x = 5,944,197,671.49/87,478.76
  6. Step 6: Final answer
    x = 67,950.19

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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.