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Finding the Fourth Proportional to 68,488.60, 102,732.90 and 47,362.18

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Solution

The fourth proportional to 68,488.60, 102,732.90 and 47,362.18 is: 71,043.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,488.60 : 102,732.90 = 47,362.18 : x
  2. Step 2: Convert to fraction form
    68,488.60/102,732.90 = 47,362.18/x
  3. Step 3: Cross multiply
    68,488.60x = 102,732.90 × 47,362.18
  4. Step 4: Simplify right side
    68,488.60x = 4,865,654,101.72
  5. Step 5: Solve for x
    x = 4,865,654,101.72/68,488.60
  6. Step 6: Final answer
    x = 71,043.27

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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.