Home / 81,232.40-121,845.40-25,826.32

Finding the Fourth Proportional to 81,232.40, 121,845.40 and 25,826.32

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Solution

The fourth proportional to 81,232.40, 121,845.40 and 25,826.32 is: 38,738.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232.40 : 121,845.40 = 25,826.32 : x
  2. Step 2: Convert to fraction form
    81,232.40/121,845.40 = 25,826.32/x
  3. Step 3: Cross multiply
    81,232.40x = 121,845.40 × 25,826.32
  4. Step 4: Simplify right side
    81,232.40x = 3,146,818,290.93
  5. Step 5: Solve for x
    x = 3,146,818,290.93/81,232.40
  6. Step 6: Final answer
    x = 38,738.46

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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.