Home / 81,320.28-121,993.38-25,158.12

Finding the Fourth Proportional to 81,320.28, 121,993.38 and 25,158.12

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Solution

The fourth proportional to 81,320.28, 121,993.38 and 25,158.12 is: 37,741.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,320.28 : 121,993.38 = 25,158.12 : x
  2. Step 2: Convert to fraction form
    81,320.28/121,993.38 = 25,158.12/x
  3. Step 3: Cross multiply
    81,320.28x = 121,993.38 × 25,158.12
  4. Step 4: Simplify right side
    81,320.28x = 3,069,124,093.25
  5. Step 5: Solve for x
    x = 3,069,124,093.25/81,320.28
  6. Step 6: Final answer
    x = 37,741.19

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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.