Home / 81,064.22-121,615.05-25,660.22

Finding the Fourth Proportional to 81,064.22, 121,615.05 and 25,660.22

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Solution

The fourth proportional to 81,064.22, 121,615.05 and 25,660.22 is: 38,496.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,064.22 : 121,615.05 = 25,660.22 : x
  2. Step 2: Convert to fraction form
    81,064.22/121,615.05 = 25,660.22/x
  3. Step 3: Cross multiply
    81,064.22x = 121,615.05 × 25,660.22
  4. Step 4: Simplify right side
    81,064.22x = 3,120,668,938.31
  5. Step 5: Solve for x
    x = 3,120,668,938.31/81,064.22
  6. Step 6: Final answer
    x = 38,496.26

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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.