Home / 87,972.66-121,401.66-47,685.48

Finding the Fourth Proportional to 87,972.66, 121,401.66 and 47,685.48

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Solution

The fourth proportional to 87,972.66, 121,401.66 and 47,685.48 is: 65,805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,972.66 : 121,401.66 = 47,685.48 : x
  2. Step 2: Convert to fraction form
    87,972.66/121,401.66 = 47,685.48/x
  3. Step 3: Cross multiply
    87,972.66x = 121,401.66 × 47,685.48
  4. Step 4: Simplify right side
    87,972.66x = 5,789,096,429.90
  5. Step 5: Solve for x
    x = 5,789,096,429.90/87,972.66
  6. Step 6: Final answer
    x = 65,805.63

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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.