Home / 74,631.80-111,753.30-71,132.60

Finding the Fourth Proportional to 74,631.80, 111,753.30 and 71,132.60

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Solution

The fourth proportional to 74,631.80, 111,753.30 and 71,132.60 is: 106,513.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,631.80 : 111,753.30 = 71,132.60 : x
  2. Step 2: Convert to fraction form
    74,631.80/111,753.30 = 71,132.60/x
  3. Step 3: Cross multiply
    74,631.80x = 111,753.30 × 71,132.60
  4. Step 4: Simplify right side
    74,631.80x = 7,949,302,787.58
  5. Step 5: Solve for x
    x = 7,949,302,787.58/74,631.80
  6. Step 6: Final answer
    x = 106,513.61

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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.