Home / 71,974.62-99,321.51-39,267.09

Finding the Fourth Proportional to 71,974.62, 99,321.51 and 39,267.09

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Solution

The fourth proportional to 71,974.62, 99,321.51 and 39,267.09 is: 54,186.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,974.62 : 99,321.51 = 39,267.09 : x
  2. Step 2: Convert to fraction form
    71,974.62/99,321.51 = 39,267.09/x
  3. Step 3: Cross multiply
    71,974.62x = 99,321.51 × 39,267.09
  4. Step 4: Simplify right side
    71,974.62x = 3,900,066,672.11
  5. Step 5: Solve for x
    x = 3,900,066,672.11/71,974.62
  6. Step 6: Final answer
    x = 54,186.69

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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.