Home / 71,912.12-99,239.18-40,083.03

Finding the Fourth Proportional to 71,912.12, 99,239.18 and 40,083.03

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Solution

The fourth proportional to 71,912.12, 99,239.18 and 40,083.03 is: 55,314.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,912.12 : 99,239.18 = 40,083.03 : x
  2. Step 2: Convert to fraction form
    71,912.12/99,239.18 = 40,083.03/x
  3. Step 3: Cross multiply
    71,912.12x = 99,239.18 × 40,083.03
  4. Step 4: Simplify right side
    71,912.12x = 3,977,807,377.42
  5. Step 5: Solve for x
    x = 3,977,807,377.42/71,912.12
  6. Step 6: Final answer
    x = 55,314.84

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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.