Home / 71,869.42-99,179.92-40,039.44

Finding the Fourth Proportional to 71,869.42, 99,179.92 and 40,039.44

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Solution

The fourth proportional to 71,869.42, 99,179.92 and 40,039.44 is: 55,254.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,869.42 : 99,179.92 = 40,039.44 : x
  2. Step 2: Convert to fraction form
    71,869.42/99,179.92 = 40,039.44/x
  3. Step 3: Cross multiply
    71,869.42x = 99,179.92 × 40,039.44
  4. Step 4: Simplify right side
    71,869.42x = 3,971,108,456.04
  5. Step 5: Solve for x
    x = 3,971,108,456.04/71,869.42
  6. Step 6: Final answer
    x = 55,254.49

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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.