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Finding the Fourth Proportional to 67,502.10, 101,233.80 and 20,115.21

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Solution

The fourth proportional to 67,502.10, 101,233.80 and 20,115.21 is: 30,167.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,502.10 : 101,233.80 = 20,115.21 : x
  2. Step 2: Convert to fraction form
    67,502.10/101,233.80 = 20,115.21/x
  3. Step 3: Cross multiply
    67,502.10x = 101,233.80 × 20,115.21
  4. Step 4: Simplify right side
    67,502.10x = 2,036,339,146.10
  5. Step 5: Solve for x
    x = 2,036,339,146.10/67,502.10
  6. Step 6: Final answer
    x = 30,167.05

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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.