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Finding the Fourth Proportional to 78,378.48, 108,181.12 and 44,863.92

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Solution

The fourth proportional to 78,378.48, 108,181.12 and 44,863.92 is: 61,922.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,378.48 : 108,181.12 = 44,863.92 : x
  2. Step 2: Convert to fraction form
    78,378.48/108,181.12 = 44,863.92/x
  3. Step 3: Cross multiply
    78,378.48x = 108,181.12 × 44,863.92
  4. Step 4: Simplify right side
    78,378.48x = 4,853,429,113.19
  5. Step 5: Solve for x
    x = 4,853,429,113.19/78,378.48
  6. Step 6: Final answer
    x = 61,922.98

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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.