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Finding the Fourth Proportional to 78,252.71, 117,394.28 and 33,273.54

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Solution

The fourth proportional to 78,252.71, 117,394.28 and 33,273.54 is: 49,916.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,252.71 : 117,394.28 = 33,273.54 : x
  2. Step 2: Convert to fraction form
    78,252.71/117,394.28 = 33,273.54/x
  3. Step 3: Cross multiply
    78,252.71x = 117,394.28 × 33,273.54
  4. Step 4: Simplify right side
    78,252.71x = 3,906,123,545.21
  5. Step 5: Solve for x
    x = 3,906,123,545.21/78,252.71
  6. Step 6: Final answer
    x = 49,916.79

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1.5x scale

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.