Home / 90,640.86-125,126.19-54,359.58

Finding the Fourth Proportional to 90,640.86, 125,126.19 and 54,359.58

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Solution

The fourth proportional to 90,640.86, 125,126.19 and 54,359.58 is: 75,041.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640.86 : 125,126.19 = 54,359.58 : x
  2. Step 2: Convert to fraction form
    90,640.86/125,126.19 = 54,359.58/x
  3. Step 3: Cross multiply
    90,640.86x = 125,126.19 × 54,359.58
  4. Step 4: Simplify right side
    90,640.86x = 6,801,807,135.40
  5. Step 5: Solve for x
    x = 6,801,807,135.40/90,640.86
  6. Step 6: Final answer
    x = 75,041.29

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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.