Home / 74,769.83-112,121.93-27,989.90

Finding the Fourth Proportional to 74,769.83, 112,121.93 and 27,989.90

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Solution

The fourth proportional to 74,769.83, 112,121.93 and 27,989.90 is: 41,972.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,769.83 : 112,121.93 = 27,989.90 : x
  2. Step 2: Convert to fraction form
    74,769.83/112,121.93 = 27,989.90/x
  3. Step 3: Cross multiply
    74,769.83x = 112,121.93 × 27,989.90
  4. Step 4: Simplify right side
    74,769.83x = 3,138,280,907.95
  5. Step 5: Solve for x
    x = 3,138,280,907.95/74,769.83
  6. Step 6: Final answer
    x = 41,972.56

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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.