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Finding the Fourth Proportional to 78,640.10, 108,524.49 and 44,647.46

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Solution

The fourth proportional to 78,640.10, 108,524.49 and 44,647.46 is: 61,614.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,640.10 : 108,524.49 = 44,647.46 : x
  2. Step 2: Convert to fraction form
    78,640.10/108,524.49 = 44,647.46/x
  3. Step 3: Cross multiply
    78,640.10x = 108,524.49 × 44,647.46
  4. Step 4: Simplify right side
    78,640.10x = 4,845,342,826.30
  5. Step 5: Solve for x
    x = 4,845,342,826.30/78,640.10
  6. Step 6: Final answer
    x = 61,614.15

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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.