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Finding the Fourth Proportional to 78,368.57, 108,149.88 and 44,376.14

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Solution

The fourth proportional to 78,368.57, 108,149.88 and 44,376.14 is: 61,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,368.57 : 108,149.88 = 44,376.14 : x
  2. Step 2: Convert to fraction form
    78,368.57/108,149.88 = 44,376.14/x
  3. Step 3: Cross multiply
    78,368.57x = 108,149.88 × 44,376.14
  4. Step 4: Simplify right side
    78,368.57x = 4,799,274,215.86
  5. Step 5: Solve for x
    x = 4,799,274,215.86/78,368.57
  6. Step 6: Final answer
    x = 61,239.78

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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.