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Finding the Fourth Proportional to 41,321.40, 61,982.10 and 20,585.40

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Solution

The fourth proportional to 41,321.40, 61,982.10 and 20,585.40 is: 30,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,321.40 : 61,982.10 = 20,585.40 : x
  2. Step 2: Convert to fraction form
    41,321.40/61,982.10 = 20,585.40/x
  3. Step 3: Cross multiply
    41,321.40x = 61,982.10 × 20,585.40
  4. Step 4: Simplify right side
    41,321.40x = 1,275,926,321.34
  5. Step 5: Solve for x
    x = 1,275,926,321.34/41,321.40
  6. Step 6: Final answer
    x = 30,878.10

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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.