Home / 87,690.18-121,015.17-49,962

Finding the Fourth Proportional to 87,690.18, 121,015.17 and 49,962

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Solution

The fourth proportional to 87,690.18, 121,015.17 and 49,962 is: 68,949.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.18 : 121,015.17 = 49,962 : x
  2. Step 2: Convert to fraction form
    87,690.18/121,015.17 = 49,962/x
  3. Step 3: Cross multiply
    87,690.18x = 121,015.17 × 49,962
  4. Step 4: Simplify right side
    87,690.18x = 6,046,159,923.54
  5. Step 5: Solve for x
    x = 6,046,159,923.54/87,690.18
  6. Step 6: Final answer
    x = 68,949.11

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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.