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Finding the Fourth Proportional to 75,255.20, 112,879.20 and 25,330.40

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Solution

The fourth proportional to 75,255.20, 112,879.20 and 25,330.40 is: 37,994.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,255.20 : 112,879.20 = 25,330.40 : x
  2. Step 2: Convert to fraction form
    75,255.20/112,879.20 = 25,330.40/x
  3. Step 3: Cross multiply
    75,255.20x = 112,879.20 × 25,330.40
  4. Step 4: Simplify right side
    75,255.20x = 2,859,275,287.68
  5. Step 5: Solve for x
    x = 2,859,275,287.68/75,255.20
  6. Step 6: Final answer
    x = 37,994.39

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1.5x scale

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.