Home / 90,976.32-136,478.88-28,627.20

Finding the Fourth Proportional to 90,976.32, 136,478.88 and 28,627.20

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Solution

The fourth proportional to 90,976.32, 136,478.88 and 28,627.20 is: 42,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,976.32 : 136,478.88 = 28,627.20 : x
  2. Step 2: Convert to fraction form
    90,976.32/136,478.88 = 28,627.20/x
  3. Step 3: Cross multiply
    90,976.32x = 136,478.88 × 28,627.20
  4. Step 4: Simplify right side
    90,976.32x = 3,907,008,193.54
  5. Step 5: Solve for x
    x = 3,907,008,193.54/90,976.32
  6. Step 6: Final answer
    x = 42,945.33

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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.