Home / 90,811.12-136,344.24-46,469.68

Finding the Fourth Proportional to 90,811.12, 136,344.24 and 46,469.68

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Solution

The fourth proportional to 90,811.12, 136,344.24 and 46,469.68 is: 69,769.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.12 : 136,344.24 = 46,469.68 : x
  2. Step 2: Convert to fraction form
    90,811.12/136,344.24 = 46,469.68/x
  3. Step 3: Cross multiply
    90,811.12x = 136,344.24 × 46,469.68
  4. Step 4: Simplify right side
    90,811.12x = 6,335,873,202.64
  5. Step 5: Solve for x
    x = 6,335,873,202.64/90,811.12
  6. Step 6: Final answer
    x = 69,769.79

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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.