Home / 71,948.96-99,290.10-40,119.92

Finding the Fourth Proportional to 71,948.96, 99,290.10 and 40,119.92

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Solution

The fourth proportional to 71,948.96, 99,290.10 and 40,119.92 is: 55,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,948.96 : 99,290.10 = 40,119.92 : x
  2. Step 2: Convert to fraction form
    71,948.96/99,290.10 = 40,119.92/x
  3. Step 3: Cross multiply
    71,948.96x = 99,290.10 × 40,119.92
  4. Step 4: Simplify right side
    71,948.96x = 3,983,510,868.79
  5. Step 5: Solve for x
    x = 3,983,510,868.79/71,948.96
  6. Step 6: Final answer
    x = 55,365.79

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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.