Home / 45,921.30-68,882.34-12,643.22

Finding the Fourth Proportional to 45,921.30, 68,882.34 and 12,643.22

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Solution

The fourth proportional to 45,921.30, 68,882.34 and 12,643.22 is: 18,964.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,921.30 : 68,882.34 = 12,643.22 : x
  2. Step 2: Convert to fraction form
    45,921.30/68,882.34 = 12,643.22/x
  3. Step 3: Cross multiply
    45,921.30x = 68,882.34 × 12,643.22
  4. Step 4: Simplify right side
    45,921.30x = 870,894,578.73
  5. Step 5: Solve for x
    x = 870,894,578.73/45,921.30
  6. Step 6: Final answer
    x = 18,964.94

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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.