Home / 90,297.20-135,365.11-42,883.04

Finding the Fourth Proportional to 90,297.20, 135,365.11 and 42,883.04

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Solution

The fourth proportional to 90,297.20, 135,365.11 and 42,883.04 is: 64,286.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,297.20 : 135,365.11 = 42,883.04 : x
  2. Step 2: Convert to fraction form
    90,297.20/135,365.11 = 42,883.04/x
  3. Step 3: Cross multiply
    90,297.20x = 135,365.11 × 42,883.04
  4. Step 4: Simplify right side
    90,297.20x = 5,804,867,657.94
  5. Step 5: Solve for x
    x = 5,804,867,657.94/90,297.20
  6. Step 6: Final answer
    x = 64,286.24

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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.