Home / 51,986.40-77,928.40-25,695.20

Finding the Fourth Proportional to 51,986.40, 77,928.40 and 25,695.20

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Solution

The fourth proportional to 51,986.40, 77,928.40 and 25,695.20 is: 38,517.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,986.40 : 77,928.40 = 25,695.20 : x
  2. Step 2: Convert to fraction form
    51,986.40/77,928.40 = 25,695.20/x
  3. Step 3: Cross multiply
    51,986.40x = 77,928.40 × 25,695.20
  4. Step 4: Simplify right side
    51,986.40x = 2,002,385,823.68
  5. Step 5: Solve for x
    x = 2,002,385,823.68/51,986.40
  6. Step 6: Final answer
    x = 38,517.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.