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Finding the Fourth Proportional to 69,318.56, 103,961.90 and 19,402.22

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Solution

The fourth proportional to 69,318.56, 103,961.90 and 19,402.22 is: 29,098.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,318.56 : 103,961.90 = 19,402.22 : x
  2. Step 2: Convert to fraction form
    69,318.56/103,961.90 = 19,402.22/x
  3. Step 3: Cross multiply
    69,318.56x = 103,961.90 × 19,402.22
  4. Step 4: Simplify right side
    69,318.56x = 2,017,091,655.42
  5. Step 5: Solve for x
    x = 2,017,091,655.42/69,318.56
  6. Step 6: Final answer
    x = 29,098.87

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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.