Home / 49,660.81-74,490.59-12,221.35

Finding the Fourth Proportional to 49,660.81, 74,490.59 and 12,221.35

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Solution

The fourth proportional to 49,660.81, 74,490.59 and 12,221.35 is: 18,331.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,660.81 : 74,490.59 = 12,221.35 : x
  2. Step 2: Convert to fraction form
    49,660.81/74,490.59 = 12,221.35/x
  3. Step 3: Cross multiply
    49,660.81x = 74,490.59 × 12,221.35
  4. Step 4: Simplify right side
    49,660.81x = 910,375,510.99
  5. Step 5: Solve for x
    x = 910,375,510.99/49,660.81
  6. Step 6: Final answer
    x = 18,331.87

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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.