Home / 90,739.87-136,141.01-53,331.24

Finding the Fourth Proportional to 90,739.87, 136,141.01 and 53,331.24

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Solution

The fourth proportional to 90,739.87, 136,141.01 and 53,331.24 is: 80,015.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,739.87 : 136,141.01 = 53,331.24 : x
  2. Step 2: Convert to fraction form
    90,739.87/136,141.01 = 53,331.24/x
  3. Step 3: Cross multiply
    90,739.87x = 136,141.01 × 53,331.24
  4. Step 4: Simplify right side
    90,739.87x = 7,260,568,878.15
  5. Step 5: Solve for x
    x = 7,260,568,878.15/90,739.87
  6. Step 6: Final answer
    x = 80,015.20

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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.