Home / 71,911.49-99,238.32-40,082.41

Finding the Fourth Proportional to 71,911.49, 99,238.32 and 40,082.41

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Solution

The fourth proportional to 71,911.49, 99,238.32 and 40,082.41 is: 55,313.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,911.49 : 99,238.32 = 40,082.41 : x
  2. Step 2: Convert to fraction form
    71,911.49/99,238.32 = 40,082.41/x
  3. Step 3: Cross multiply
    71,911.49x = 99,238.32 × 40,082.41
  4. Step 4: Simplify right side
    71,911.49x = 3,977,711,029.95
  5. Step 5: Solve for x
    x = 3,977,711,029.95/71,911.49
  6. Step 6: Final answer
    x = 55,313.98

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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.