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Finding the Fourth Proportional to 68,572.80, 102,794.40 and 40,514.40

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Solution

The fourth proportional to 68,572.80, 102,794.40 and 40,514.40 is: 60,733.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,572.80 : 102,794.40 = 40,514.40 : x
  2. Step 2: Convert to fraction form
    68,572.80/102,794.40 = 40,514.40/x
  3. Step 3: Cross multiply
    68,572.80x = 102,794.40 × 40,514.40
  4. Step 4: Simplify right side
    68,572.80x = 4,164,653,439.36
  5. Step 5: Solve for x
    x = 4,164,653,439.36/68,572.80
  6. Step 6: Final answer
    x = 60,733.31

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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.