Home / 89,964.29-135,028.76-45,621.65

Finding the Fourth Proportional to 89,964.29, 135,028.76 and 45,621.65

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Solution

The fourth proportional to 89,964.29, 135,028.76 and 45,621.65 is: 68,474.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,964.29 : 135,028.76 = 45,621.65 : x
  2. Step 2: Convert to fraction form
    89,964.29/135,028.76 = 45,621.65/x
  3. Step 3: Cross multiply
    89,964.29x = 135,028.76 × 45,621.65
  4. Step 4: Simplify right side
    89,964.29x = 6,160,234,938.12
  5. Step 5: Solve for x
    x = 6,160,234,938.12/89,964.29
  6. Step 6: Final answer
    x = 68,474.22

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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.