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Finding the Fourth Proportional to 79,791.60, 110,118.72 and 43,988.16

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Solution

The fourth proportional to 79,791.60, 110,118.72 and 43,988.16 is: 60,707.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,791.60 : 110,118.72 = 43,988.16 : x
  2. Step 2: Convert to fraction form
    79,791.60/110,118.72 = 43,988.16/x
  3. Step 3: Cross multiply
    79,791.60x = 110,118.72 × 43,988.16
  4. Step 4: Simplify right side
    79,791.60x = 4,843,919,874.36
  5. Step 5: Solve for x
    x = 4,843,919,874.36/79,791.60
  6. Step 6: Final answer
    x = 60,707.14

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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.