Home / 81,350.12-121,803.24-61,568.84

Finding the Fourth Proportional to 81,350.12, 121,803.24 and 61,568.84

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Solution

The fourth proportional to 81,350.12, 121,803.24 and 61,568.84 is: 92,185.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,350.12 : 121,803.24 = 61,568.84 : x
  2. Step 2: Convert to fraction form
    81,350.12/121,803.24 = 61,568.84/x
  3. Step 3: Cross multiply
    81,350.12x = 121,803.24 × 61,568.84
  4. Step 4: Simplify right side
    81,350.12x = 7,499,284,195.04
  5. Step 5: Solve for x
    x = 7,499,284,195.04/81,350.12
  6. Step 6: Final answer
    x = 92,185.29

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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.