Home / 87,686.19-120,977.90-49,440.93

Finding the Fourth Proportional to 87,686.19, 120,977.90 and 49,440.93

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Solution

The fourth proportional to 87,686.19, 120,977.90 and 49,440.93 is: 68,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,686.19 : 120,977.90 = 49,440.93 : x
  2. Step 2: Convert to fraction form
    87,686.19/120,977.90 = 49,440.93/x
  3. Step 3: Cross multiply
    87,686.19x = 120,977.90 × 49,440.93
  4. Step 4: Simplify right side
    87,686.19x = 5,981,259,638.24
  5. Step 5: Solve for x
    x = 5,981,259,638.24/87,686.19
  6. Step 6: Final answer
    x = 68,212.11

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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.