Home / 45,424.49-68,140.13-12,143.79

Finding the Fourth Proportional to 45,424.49, 68,140.13 and 12,143.79

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Solution

The fourth proportional to 45,424.49, 68,140.13 and 12,143.79 is: 18,216.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,424.49 : 68,140.13 = 12,143.79 : x
  2. Step 2: Convert to fraction form
    45,424.49/68,140.13 = 12,143.79/x
  3. Step 3: Cross multiply
    45,424.49x = 68,140.13 × 12,143.79
  4. Step 4: Simplify right side
    45,424.49x = 827,479,429.29
  5. Step 5: Solve for x
    x = 827,479,429.29/45,424.49
  6. Step 6: Final answer
    x = 18,216.59

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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.