Home / 81,017.13-121,525.70-25,613.13

Finding the Fourth Proportional to 81,017.13, 121,525.70 and 25,613.13

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Solution

The fourth proportional to 81,017.13, 121,525.70 and 25,613.13 is: 38,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,017.13 : 121,525.70 = 25,613.13 : x
  2. Step 2: Convert to fraction form
    81,017.13/121,525.70 = 25,613.13/x
  3. Step 3: Cross multiply
    81,017.13x = 121,525.70 × 25,613.13
  4. Step 4: Simplify right side
    81,017.13x = 3,112,653,552.44
  5. Step 5: Solve for x
    x = 3,112,653,552.44/81,017.13
  6. Step 6: Final answer
    x = 38,419.70

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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.