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Finding the Fourth Proportional to 79,140.82, 118,717.38 and 22,981.86

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Solution

The fourth proportional to 79,140.82, 118,717.38 and 22,981.86 is: 34,474.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,140.82 : 118,717.38 = 22,981.86 : x
  2. Step 2: Convert to fraction form
    79,140.82/118,717.38 = 22,981.86/x
  3. Step 3: Cross multiply
    79,140.82x = 118,717.38 × 22,981.86
  4. Step 4: Simplify right side
    79,140.82x = 2,728,345,498.23
  5. Step 5: Solve for x
    x = 2,728,345,498.23/79,140.82
  6. Step 6: Final answer
    x = 34,474.57

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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.