Home / 87,715.15-121,060.53-57,587.87

Finding the Fourth Proportional to 87,715.15, 121,060.53 and 57,587.87

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Solution

The fourth proportional to 87,715.15, 121,060.53 and 57,587.87 is: 79,480.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,715.15 : 121,060.53 = 57,587.87 : x
  2. Step 2: Convert to fraction form
    87,715.15/121,060.53 = 57,587.87/x
  3. Step 3: Cross multiply
    87,715.15x = 121,060.53 × 57,587.87
  4. Step 4: Simplify right side
    87,715.15x = 6,971,618,366.42
  5. Step 5: Solve for x
    x = 6,971,618,366.42/87,715.15
  6. Step 6: Final answer
    x = 79,480.21

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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.