Home / 72,556.25-108,876.39-30,432.57

Finding the Fourth Proportional to 72,556.25, 108,876.39 and 30,432.57

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Solution

The fourth proportional to 72,556.25, 108,876.39 and 30,432.57 is: 45,666.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,556.25 : 108,876.39 = 30,432.57 : x
  2. Step 2: Convert to fraction form
    72,556.25/108,876.39 = 30,432.57/x
  3. Step 3: Cross multiply
    72,556.25x = 108,876.39 × 30,432.57
  4. Step 4: Simplify right side
    72,556.25x = 3,313,388,360.02
  5. Step 5: Solve for x
    x = 3,313,388,360.02/72,556.25
  6. Step 6: Final answer
    x = 45,666.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.