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Finding the Fourth Proportional to 68,514.80, 102,695.40 and 29,065.20

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Solution

The fourth proportional to 68,514.80, 102,695.40 and 29,065.20 is: 43,565.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,514.80 : 102,695.40 = 29,065.20 : x
  2. Step 2: Convert to fraction form
    68,514.80/102,695.40 = 29,065.20/x
  3. Step 3: Cross multiply
    68,514.80x = 102,695.40 × 29,065.20
  4. Step 4: Simplify right side
    68,514.80x = 2,984,862,340.08
  5. Step 5: Solve for x
    x = 2,984,862,340.08/68,514.80
  6. Step 6: Final answer
    x = 43,565.22

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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.