Home / 87,711.57-121,061.93-51,922.53

Finding the Fourth Proportional to 87,711.57, 121,061.93 and 51,922.53

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Solution

The fourth proportional to 87,711.57, 121,061.93 and 51,922.53 is: 71,664.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.57 : 121,061.93 = 51,922.53 : x
  2. Step 2: Convert to fraction form
    87,711.57/121,061.93 = 51,922.53/x
  3. Step 3: Cross multiply
    87,711.57x = 121,061.93 × 51,922.53
  4. Step 4: Simplify right side
    87,711.57x = 6,285,841,432.67
  5. Step 5: Solve for x
    x = 6,285,841,432.67/87,711.57
  6. Step 6: Final answer
    x = 71,664.91

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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.