Home / 81,036.75-121,555.67-25,632.75

Finding the Fourth Proportional to 81,036.75, 121,555.67 and 25,632.75

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Solution

The fourth proportional to 81,036.75, 121,555.67 and 25,632.75 is: 38,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,036.75 : 121,555.67 = 25,632.75 : x
  2. Step 2: Convert to fraction form
    81,036.75/121,555.67 = 25,632.75/x
  3. Step 3: Cross multiply
    81,036.75x = 121,555.67 × 25,632.75
  4. Step 4: Simplify right side
    81,036.75x = 3,115,806,100.19
  5. Step 5: Solve for x
    x = 3,115,806,100.19/81,036.75
  6. Step 6: Final answer
    x = 38,449.30

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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.