Home / 87,904.70-121,305.98-51,605.57

Finding the Fourth Proportional to 87,904.70, 121,305.98 and 51,605.57

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Solution

The fourth proportional to 87,904.70, 121,305.98 and 51,605.57 is: 71,214.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,904.70 : 121,305.98 = 51,605.57 : x
  2. Step 2: Convert to fraction form
    87,904.70/121,305.98 = 51,605.57/x
  3. Step 3: Cross multiply
    87,904.70x = 121,305.98 × 51,605.57
  4. Step 4: Simplify right side
    87,904.70x = 6,260,063,377.75
  5. Step 5: Solve for x
    x = 6,260,063,377.75/87,904.70
  6. Step 6: Final answer
    x = 71,214.21

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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.