Home / 90,725.86-125,168.52-54,902.80

Finding the Fourth Proportional to 90,725.86, 125,168.52 and 54,902.80

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Solution

The fourth proportional to 90,725.86, 125,168.52 and 54,902.80 is: 75,745.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,725.86 : 125,168.52 = 54,902.80 : x
  2. Step 2: Convert to fraction form
    90,725.86/125,168.52 = 54,902.80/x
  3. Step 3: Cross multiply
    90,725.86x = 125,168.52 × 54,902.80
  4. Step 4: Simplify right side
    90,725.86x = 6,872,102,219.86
  5. Step 5: Solve for x
    x = 6,872,102,219.86/90,725.86
  6. Step 6: Final answer
    x = 75,745.79

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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.