Home / 68,621.28-102,788.88-55,222.08

Finding the Fourth Proportional to 68,621.28, 102,788.88 and 55,222.08

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Solution

The fourth proportional to 68,621.28, 102,788.88 and 55,222.08 is: 82,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,621.28 : 102,788.88 = 55,222.08 : x
  2. Step 2: Convert to fraction form
    68,621.28/102,788.88 = 55,222.08/x
  3. Step 3: Cross multiply
    68,621.28x = 102,788.88 × 55,222.08
  4. Step 4: Simplify right side
    68,621.28x = 5,676,215,754.47
  5. Step 5: Solve for x
    x = 5,676,215,754.47/68,621.28
  6. Step 6: Final answer
    x = 82,718.01

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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.