Home / 87,691.10-121,014.88-51,880.19

Finding the Fourth Proportional to 87,691.10, 121,014.88 and 51,880.19

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Solution

The fourth proportional to 87,691.10, 121,014.88 and 51,880.19 is: 71,595.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,691.10 : 121,014.88 = 51,880.19 : x
  2. Step 2: Convert to fraction form
    87,691.10/121,014.88 = 51,880.19/x
  3. Step 3: Cross multiply
    87,691.10x = 121,014.88 × 51,880.19
  4. Step 4: Simplify right side
    87,691.10x = 6,278,274,232.45
  5. Step 5: Solve for x
    x = 6,278,274,232.45/87,691.10
  6. Step 6: Final answer
    x = 71,595.35

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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.