Home / 71,869.53-99,180.11-40,039.57

Finding the Fourth Proportional to 71,869.53, 99,180.11 and 40,039.57

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Solution

The fourth proportional to 71,869.53, 99,180.11 and 40,039.57 is: 55,254.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,869.53 : 99,180.11 = 40,039.57 : x
  2. Step 2: Convert to fraction form
    71,869.53/99,180.11 = 40,039.57/x
  3. Step 3: Cross multiply
    71,869.53x = 99,180.11 × 40,039.57
  4. Step 4: Simplify right side
    71,869.53x = 3,971,128,260.85
  5. Step 5: Solve for x
    x = 3,971,128,260.85/71,869.53
  6. Step 6: Final answer
    x = 55,254.69

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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.