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Finding the Fourth Proportional to 74,998.80, 112,509.12 and 27,636.56

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Solution

The fourth proportional to 74,998.80, 112,509.12 and 27,636.56 is: 41,458.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,998.80 : 112,509.12 = 27,636.56 : x
  2. Step 2: Convert to fraction form
    74,998.80/112,509.12 = 27,636.56/x
  3. Step 3: Cross multiply
    74,998.80x = 112,509.12 × 27,636.56
  4. Step 4: Simplify right side
    74,998.80x = 3,109,365,045.43
  5. Step 5: Solve for x
    x = 3,109,365,045.43/74,998.80
  6. Step 6: Final answer
    x = 41,458.86

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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.