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Finding the Fourth Proportional to 45,609.80, 68,414.70 and 40,944.20

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Solution

The fourth proportional to 45,609.80, 68,414.70 and 40,944.20 is: 61,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,609.80 : 68,414.70 = 40,944.20 : x
  2. Step 2: Convert to fraction form
    45,609.80/68,414.70 = 40,944.20/x
  3. Step 3: Cross multiply
    45,609.80x = 68,414.70 × 40,944.20
  4. Step 4: Simplify right side
    45,609.80x = 2,801,185,159.74
  5. Step 5: Solve for x
    x = 2,801,185,159.74/45,609.80
  6. Step 6: Final answer
    x = 61,416.30

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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.