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Finding the Fourth Proportional to 73,515, 101,452.32 and 39,981

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Solution

The fourth proportional to 73,515, 101,452.32 and 39,981 is: 55,174.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,515 : 101,452.32 = 39,981 : x
  2. Step 2: Convert to fraction form
    73,515/101,452.32 = 39,981/x
  3. Step 3: Cross multiply
    73,515x = 101,452.32 × 39,981
  4. Step 4: Simplify right side
    73,515x = 4,056,165,205.92
  5. Step 5: Solve for x
    x = 4,056,165,205.92/73,515
  6. Step 6: Final answer
    x = 55,174.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.