Home / 90,648.45-125,072.24-54,355.59

Finding the Fourth Proportional to 90,648.45, 125,072.24 and 54,355.59

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Solution

The fourth proportional to 90,648.45, 125,072.24 and 54,355.59 is: 74,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,648.45 : 125,072.24 = 54,355.59 : x
  2. Step 2: Convert to fraction form
    90,648.45/125,072.24 = 54,355.59/x
  3. Step 3: Cross multiply
    90,648.45x = 125,072.24 × 54,355.59
  4. Step 4: Simplify right side
    90,648.45x = 6,798,375,126.04
  5. Step 5: Solve for x
    x = 6,798,375,126.04/90,648.45
  6. Step 6: Final answer
    x = 74,997.15

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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.