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Finding the Fourth Proportional to 49,640.99, 74,419.62 and 21,539.92

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Solution

The fourth proportional to 49,640.99, 74,419.62 and 21,539.92 is: 32,291.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,640.99 : 74,419.62 = 21,539.92 : x
  2. Step 2: Convert to fraction form
    49,640.99/74,419.62 = 21,539.92/x
  3. Step 3: Cross multiply
    49,640.99x = 74,419.62 × 21,539.92
  4. Step 4: Simplify right side
    49,640.99x = 1,602,992,475.18
  5. Step 5: Solve for x
    x = 1,602,992,475.18/49,640.99
  6. Step 6: Final answer
    x = 32,291.71

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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.