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Finding the Fourth Proportional to 67,654.23, 101,491.08 and 20,910.75

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Solution

The fourth proportional to 67,654.23, 101,491.08 and 20,910.75 is: 31,369.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,654.23 : 101,491.08 = 20,910.75 : x
  2. Step 2: Convert to fraction form
    67,654.23/101,491.08 = 20,910.75/x
  3. Step 3: Cross multiply
    67,654.23x = 101,491.08 × 20,910.75
  4. Step 4: Simplify right side
    67,654.23x = 2,122,254,601.11
  5. Step 5: Solve for x
    x = 2,122,254,601.11/67,654.23
  6. Step 6: Final answer
    x = 31,369.13

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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.