Home / 77,947.42-107,559.38-57,540.33

Finding the Fourth Proportional to 77,947.42, 107,559.38 and 57,540.33

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Solution

The fourth proportional to 77,947.42, 107,559.38 and 57,540.33 is: 79,399.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,947.42 : 107,559.38 = 57,540.33 : x
  2. Step 2: Convert to fraction form
    77,947.42/107,559.38 = 57,540.33/x
  3. Step 3: Cross multiply
    77,947.42x = 107,559.38 × 57,540.33
  4. Step 4: Simplify right side
    77,947.42x = 6,189,001,744.52
  5. Step 5: Solve for x
    x = 6,189,001,744.52/77,947.42
  6. Step 6: Final answer
    x = 79,399.70

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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.