Home / 71,948.38-99,289.34-40,119.42

Finding the Fourth Proportional to 71,948.38, 99,289.34 and 40,119.42

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Solution

The fourth proportional to 71,948.38, 99,289.34 and 40,119.42 is: 55,365.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,948.38 : 99,289.34 = 40,119.42 : x
  2. Step 2: Convert to fraction form
    71,948.38/99,289.34 = 40,119.42/x
  3. Step 3: Cross multiply
    71,948.38x = 99,289.34 × 40,119.42
  4. Step 4: Simplify right side
    71,948.38x = 3,983,430,732.98
  5. Step 5: Solve for x
    x = 3,983,430,732.98/71,948.38
  6. Step 6: Final answer
    x = 55,365.12

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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.