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Finding the Fourth Proportional to 79,959.12, 110,490.12 and 69,314.64

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Solution

The fourth proportional to 79,959.12, 110,490.12 and 69,314.64 is: 95,781.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,959.12 : 110,490.12 = 69,314.64 : x
  2. Step 2: Convert to fraction form
    79,959.12/110,490.12 = 69,314.64/x
  3. Step 3: Cross multiply
    79,959.12x = 110,490.12 × 69,314.64
  4. Step 4: Simplify right side
    79,959.12x = 7,658,582,891.36
  5. Step 5: Solve for x
    x = 7,658,582,891.36/79,959.12
  6. Step 6: Final answer
    x = 95,781.23

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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.