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Finding the Fourth Proportional to 67,405.08, 101,103.96 and 20,658.08

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Solution

The fourth proportional to 67,405.08, 101,103.96 and 20,658.08 is: 30,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,405.08 : 101,103.96 = 20,658.08 : x
  2. Step 2: Convert to fraction form
    67,405.08/101,103.96 = 20,658.08/x
  3. Step 3: Cross multiply
    67,405.08x = 101,103.96 × 20,658.08
  4. Step 4: Simplify right side
    67,405.08x = 2,088,613,694.00
  5. Step 5: Solve for x
    x = 2,088,613,694.00/67,405.08
  6. Step 6: Final answer
    x = 30,986.00

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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.