Home / 87,637.75-120,940.10-47,351.53

Finding the Fourth Proportional to 87,637.75, 120,940.10 and 47,351.53

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Solution

The fourth proportional to 87,637.75, 120,940.10 and 47,351.53 is: 65,345.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,637.75 : 120,940.10 = 47,351.53 : x
  2. Step 2: Convert to fraction form
    87,637.75/120,940.10 = 47,351.53/x
  3. Step 3: Cross multiply
    87,637.75x = 120,940.10 × 47,351.53
  4. Step 4: Simplify right side
    87,637.75x = 5,726,698,773.35
  5. Step 5: Solve for x
    x = 5,726,698,773.35/87,637.75
  6. Step 6: Final answer
    x = 65,345.11

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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.