Home / 91,917.71-137,876.68-28,738.17

Finding the Fourth Proportional to 91,917.71, 137,876.68 and 28,738.17

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Solution

The fourth proportional to 91,917.71, 137,876.68 and 28,738.17 is: 43,107.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,917.71 : 137,876.68 = 28,738.17 : x
  2. Step 2: Convert to fraction form
    91,917.71/137,876.68 = 28,738.17/x
  3. Step 3: Cross multiply
    91,917.71x = 137,876.68 × 28,738.17
  4. Step 4: Simplify right side
    91,917.71x = 3,962,322,677.29
  5. Step 5: Solve for x
    x = 3,962,322,677.29/91,917.71
  6. Step 6: Final answer
    x = 43,107.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.