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Finding the Fourth Proportional to 45,211.71, 67,819.10 and 18,193.71

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Solution

The fourth proportional to 45,211.71, 67,819.10 and 18,193.71 is: 27,291.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,211.71 : 67,819.10 = 18,193.71 : x
  2. Step 2: Convert to fraction form
    45,211.71/67,819.10 = 18,193.71/x
  3. Step 3: Cross multiply
    45,211.71x = 67,819.10 × 18,193.71
  4. Step 4: Simplify right side
    45,211.71x = 1,233,881,037.86
  5. Step 5: Solve for x
    x = 1,233,881,037.86/45,211.71
  6. Step 6: Final answer
    x = 27,291.18

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1.5x scale

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.