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Finding the Fourth Proportional to 49,902.32, 74,847.48 and 21,842

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Solution

The fourth proportional to 49,902.32, 74,847.48 and 21,842 is: 32,760.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,902.32 : 74,847.48 = 21,842 : x
  2. Step 2: Convert to fraction form
    49,902.32/74,847.48 = 21,842/x
  3. Step 3: Cross multiply
    49,902.32x = 74,847.48 × 21,842
  4. Step 4: Simplify right side
    49,902.32x = 1,634,818,658.16
  5. Step 5: Solve for x
    x = 1,634,818,658.16/49,902.32
  6. Step 6: Final answer
    x = 32,760.37

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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.