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Finding the Fourth Proportional to 79,140.78, 118,722.93 and 22,981.38

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Solution

The fourth proportional to 79,140.78, 118,722.93 and 22,981.38 is: 34,475.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,140.78 : 118,722.93 = 22,981.38 : x
  2. Step 2: Convert to fraction form
    79,140.78/118,722.93 = 22,981.38/x
  3. Step 3: Cross multiply
    79,140.78x = 118,722.93 × 22,981.38
  4. Step 4: Simplify right side
    79,140.78x = 2,728,416,769.04
  5. Step 5: Solve for x
    x = 2,728,416,769.04/79,140.78
  6. Step 6: Final answer
    x = 34,475.48

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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.