Home / 81,005.45-121,508.17-25,597.13

Finding the Fourth Proportional to 81,005.45, 121,508.17 and 25,597.13

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Solution

The fourth proportional to 81,005.45, 121,508.17 and 25,597.13 is: 38,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,005.45 : 121,508.17 = 25,597.13 : x
  2. Step 2: Convert to fraction form
    81,005.45/121,508.17 = 25,597.13/x
  3. Step 3: Cross multiply
    81,005.45x = 121,508.17 × 25,597.13
  4. Step 4: Simplify right side
    81,005.45x = 3,110,259,816.01
  5. Step 5: Solve for x
    x = 3,110,259,816.01/81,005.45
  6. Step 6: Final answer
    x = 38,395.69

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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.