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Finding the Fourth Proportional to 45,894.80, 68,841.18 and 18,871.44

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Solution

The fourth proportional to 45,894.80, 68,841.18 and 18,871.44 is: 28,306.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,894.80 : 68,841.18 = 18,871.44 : x
  2. Step 2: Convert to fraction form
    45,894.80/68,841.18 = 18,871.44/x
  3. Step 3: Cross multiply
    45,894.80x = 68,841.18 × 18,871.44
  4. Step 4: Simplify right side
    45,894.80x = 1,299,132,197.90
  5. Step 5: Solve for x
    x = 1,299,132,197.90/45,894.80
  6. Step 6: Final answer
    x = 28,306.74

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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.