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Finding the Fourth Proportional to 78,364.31, 108,144.04 and 44,371.90

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Solution

The fourth proportional to 78,364.31, 108,144.04 and 44,371.90 is: 61,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,364.31 : 108,144.04 = 44,371.90 : x
  2. Step 2: Convert to fraction form
    78,364.31/108,144.04 = 44,371.90/x
  3. Step 3: Cross multiply
    78,364.31x = 108,144.04 × 44,371.90
  4. Step 4: Simplify right side
    78,364.31x = 4,798,556,528.48
  5. Step 5: Solve for x
    x = 4,798,556,528.48/78,364.31
  6. Step 6: Final answer
    x = 61,233.95

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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.