Home / 74,105.28-102,265.60-40,571.52

Finding the Fourth Proportional to 74,105.28, 102,265.60 and 40,571.52

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Solution

The fourth proportional to 74,105.28, 102,265.60 and 40,571.52 is: 55,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,105.28 : 102,265.60 = 40,571.52 : x
  2. Step 2: Convert to fraction form
    74,105.28/102,265.60 = 40,571.52/x
  3. Step 3: Cross multiply
    74,105.28x = 102,265.60 × 40,571.52
  4. Step 4: Simplify right side
    74,105.28x = 4,149,070,835.71
  5. Step 5: Solve for x
    x = 4,149,070,835.71/74,105.28
  6. Step 6: Final answer
    x = 55,988.87

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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.