Home / 90,805.41-125,315.52-75,672.75

Finding the Fourth Proportional to 90,805.41, 125,315.52 and 75,672.75

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Solution

The fourth proportional to 90,805.41, 125,315.52 and 75,672.75 is: 104,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,805.41 : 125,315.52 = 75,672.75 : x
  2. Step 2: Convert to fraction form
    90,805.41/125,315.52 = 75,672.75/x
  3. Step 3: Cross multiply
    90,805.41x = 125,315.52 × 75,672.75
  4. Step 4: Simplify right side
    90,805.41x = 9,482,970,016.08
  5. Step 5: Solve for x
    x = 9,482,970,016.08/90,805.41
  6. Step 6: Final answer
    x = 104,431.77

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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.