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Finding the Fourth Proportional to 78,981.08, 118,404.96 and 36,838.96

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Solution

The fourth proportional to 78,981.08, 118,404.96 and 36,838.96 is: 55,227.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,981.08 : 118,404.96 = 36,838.96 : x
  2. Step 2: Convert to fraction form
    78,981.08/118,404.96 = 36,838.96/x
  3. Step 3: Cross multiply
    78,981.08x = 118,404.96 × 36,838.96
  4. Step 4: Simplify right side
    78,981.08x = 4,361,915,585.24
  5. Step 5: Solve for x
    x = 4,361,915,585.24/78,981.08
  6. Step 6: Final answer
    x = 55,227.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.