Home / 81,839.71-122,759.67-25,684.12

Finding the Fourth Proportional to 81,839.71, 122,759.67 and 25,684.12

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Solution

The fourth proportional to 81,839.71, 122,759.67 and 25,684.12 is: 38,526.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,839.71 : 122,759.67 = 25,684.12 : x
  2. Step 2: Convert to fraction form
    81,839.71/122,759.67 = 25,684.12/x
  3. Step 3: Cross multiply
    81,839.71x = 122,759.67 × 25,684.12
  4. Step 4: Simplify right side
    81,839.71x = 3,152,974,095.44
  5. Step 5: Solve for x
    x = 3,152,974,095.44/81,839.71
  6. Step 6: Final answer
    x = 38,526.21

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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.