Home / 81,335.40-112,168.02-68,716.41

Finding the Fourth Proportional to 81,335.40, 112,168.02 and 68,716.41

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Solution

The fourth proportional to 81,335.40, 112,168.02 and 68,716.41 is: 94,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,335.40 : 112,168.02 = 68,716.41 : x
  2. Step 2: Convert to fraction form
    81,335.40/112,168.02 = 68,716.41/x
  3. Step 3: Cross multiply
    81,335.40x = 112,168.02 × 68,716.41
  4. Step 4: Simplify right side
    81,335.40x = 7,707,783,651.21
  5. Step 5: Solve for x
    x = 7,707,783,651.21/81,335.40
  6. Step 6: Final answer
    x = 94,765.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.