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Finding the Fourth Proportional to 79,791.47, 110,117.15 and 43,981.40

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Solution

The fourth proportional to 79,791.47, 110,117.15 and 43,981.40 is: 60,697.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,791.47 : 110,117.15 = 43,981.40 : x
  2. Step 2: Convert to fraction form
    79,791.47/110,117.15 = 43,981.40/x
  3. Step 3: Cross multiply
    79,791.47x = 110,117.15 × 43,981.40
  4. Step 4: Simplify right side
    79,791.47x = 4,843,105,650.52
  5. Step 5: Solve for x
    x = 4,843,105,650.52/79,791.47
  6. Step 6: Final answer
    x = 60,697.04

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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.