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Finding the Fourth Proportional to 49,957.73, 74,989.94 and 21,508.77

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Solution

The fourth proportional to 49,957.73, 74,989.94 and 21,508.77 is: 32,286.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,957.73 : 74,989.94 = 21,508.77 : x
  2. Step 2: Convert to fraction form
    49,957.73/74,989.94 = 21,508.77/x
  3. Step 3: Cross multiply
    49,957.73x = 74,989.94 × 21,508.77
  4. Step 4: Simplify right side
    49,957.73x = 1,612,941,319.82
  5. Step 5: Solve for x
    x = 1,612,941,319.82/49,957.73
  6. Step 6: Final answer
    x = 32,286.12

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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.