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Finding the Fourth Proportional to 48,382.43, 72,601.67 and 20,300

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Solution

The fourth proportional to 48,382.43, 72,601.67 and 20,300 is: 30,461.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,382.43 : 72,601.67 = 20,300 : x
  2. Step 2: Convert to fraction form
    48,382.43/72,601.67 = 20,300/x
  3. Step 3: Cross multiply
    48,382.43x = 72,601.67 × 20,300
  4. Step 4: Simplify right side
    48,382.43x = 1,473,813,901
  5. Step 5: Solve for x
    x = 1,473,813,901/48,382.43
  6. Step 6: Final answer
    x = 30,461.76

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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.