Home / 87,874.59-121,266.30-47,587.80

Finding the Fourth Proportional to 87,874.59, 121,266.30 and 47,587.80

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Solution

The fourth proportional to 87,874.59, 121,266.30 and 47,587.80 is: 65,670.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,874.59 : 121,266.30 = 47,587.80 : x
  2. Step 2: Convert to fraction form
    87,874.59/121,266.30 = 47,587.80/x
  3. Step 3: Cross multiply
    87,874.59x = 121,266.30 × 47,587.80
  4. Step 4: Simplify right side
    87,874.59x = 5,770,796,431.14
  5. Step 5: Solve for x
    x = 5,770,796,431.14/87,874.59
  6. Step 6: Final answer
    x = 65,670.82

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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.