Home / 81,184.53-121,731.23-55,913.75

Finding the Fourth Proportional to 81,184.53, 121,731.23 and 55,913.75

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Solution

The fourth proportional to 81,184.53, 121,731.23 and 55,913.75 is: 83,839.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,184.53 : 121,731.23 = 55,913.75 : x
  2. Step 2: Convert to fraction form
    81,184.53/121,731.23 = 55,913.75/x
  3. Step 3: Cross multiply
    81,184.53x = 121,731.23 × 55,913.75
  4. Step 4: Simplify right side
    81,184.53x = 6,806,449,561.41
  5. Step 5: Solve for x
    x = 6,806,449,561.41/81,184.53
  6. Step 6: Final answer
    x = 83,839.24

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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.