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Finding the Fourth Proportional to 69,438.16, 104,073.72 and 39,874.96

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Solution

The fourth proportional to 69,438.16, 104,073.72 and 39,874.96 is: 59,764.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,438.16 : 104,073.72 = 39,874.96 : x
  2. Step 2: Convert to fraction form
    69,438.16/104,073.72 = 39,874.96/x
  3. Step 3: Cross multiply
    69,438.16x = 104,073.72 × 39,874.96
  4. Step 4: Simplify right side
    69,438.16x = 4,149,935,422.05
  5. Step 5: Solve for x
    x = 4,149,935,422.05/69,438.16
  6. Step 6: Final answer
    x = 59,764.48

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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.