Home / 83,696.78-125,545.17-31,119.50

Finding the Fourth Proportional to 83,696.78, 125,545.17 and 31,119.50

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Solution

The fourth proportional to 83,696.78, 125,545.17 and 31,119.50 is: 46,679.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,696.78 : 125,545.17 = 31,119.50 : x
  2. Step 2: Convert to fraction form
    83,696.78/125,545.17 = 31,119.50/x
  3. Step 3: Cross multiply
    83,696.78x = 125,545.17 × 31,119.50
  4. Step 4: Simplify right side
    83,696.78x = 3,906,902,917.82
  5. Step 5: Solve for x
    x = 3,906,902,917.82/83,696.78
  6. Step 6: Final answer
    x = 46,679.25

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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.