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Finding the Fourth Proportional to 68,489.60, 102,734.40 and 47,363.18

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Solution

The fourth proportional to 68,489.60, 102,734.40 and 47,363.18 is: 71,044.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,489.60 : 102,734.40 = 47,363.18 : x
  2. Step 2: Convert to fraction form
    68,489.60/102,734.40 = 47,363.18/x
  3. Step 3: Cross multiply
    68,489.60x = 102,734.40 × 47,363.18
  4. Step 4: Simplify right side
    68,489.60x = 4,865,827,879.39
  5. Step 5: Solve for x
    x = 4,865,827,879.39/68,489.60
  6. Step 6: Final answer
    x = 71,044.77

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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.