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Finding the Fourth Proportional to 78,414.79, 108,188.56 and 44,417.87

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Solution

The fourth proportional to 78,414.79, 108,188.56 and 44,417.87 is: 61,283.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,414.79 : 108,188.56 = 44,417.87 : x
  2. Step 2: Convert to fraction form
    78,414.79/108,188.56 = 44,417.87/x
  3. Step 3: Cross multiply
    78,414.79x = 108,188.56 × 44,417.87
  4. Step 4: Simplify right side
    78,414.79x = 4,805,505,393.57
  5. Step 5: Solve for x
    x = 4,805,505,393.57/78,414.79
  6. Step 6: Final answer
    x = 61,283.15

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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.