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Finding the Fourth Proportional to 49,990.73, 74,957.74 and 20,373.89

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Solution

The fourth proportional to 49,990.73, 74,957.74 and 20,373.89 is: 30,549.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,990.73 : 74,957.74 = 20,373.89 : x
  2. Step 2: Convert to fraction form
    49,990.73/74,957.74 = 20,373.89/x
  3. Step 3: Cross multiply
    49,990.73x = 74,957.74 × 20,373.89
  4. Step 4: Simplify right side
    49,990.73x = 1,527,180,323.69
  5. Step 5: Solve for x
    x = 1,527,180,323.69/49,990.73
  6. Step 6: Final answer
    x = 30,549.27

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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.