Home / 81,065.22-121,616.55-25,661.22

Finding the Fourth Proportional to 81,065.22, 121,616.55 and 25,661.22

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Solution

The fourth proportional to 81,065.22, 121,616.55 and 25,661.22 is: 38,497.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,065.22 : 121,616.55 = 25,661.22 : x
  2. Step 2: Convert to fraction form
    81,065.22/121,616.55 = 25,661.22/x
  3. Step 3: Cross multiply
    81,065.22x = 121,616.55 × 25,661.22
  4. Step 4: Simplify right side
    81,065.22x = 3,120,829,045.19
  5. Step 5: Solve for x
    x = 3,120,829,045.19/81,065.22
  6. Step 6: Final answer
    x = 38,497.76

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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.