Home / 90,756.88-125,255.66-54,959.34

Finding the Fourth Proportional to 90,756.88, 125,255.66 and 54,959.34

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Solution

The fourth proportional to 90,756.88, 125,255.66 and 54,959.34 is: 75,850.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,756.88 : 125,255.66 = 54,959.34 : x
  2. Step 2: Convert to fraction form
    90,756.88/125,255.66 = 54,959.34/x
  3. Step 3: Cross multiply
    90,756.88x = 125,255.66 × 54,959.34
  4. Step 4: Simplify right side
    90,756.88x = 6,883,968,404.86
  5. Step 5: Solve for x
    x = 6,883,968,404.86/90,756.88
  6. Step 6: Final answer
    x = 75,850.65

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1.5x scale

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.