Home / 90,040.61-135,067.75-26,855.79

Finding the Fourth Proportional to 90,040.61, 135,067.75 and 26,855.79

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Solution

The fourth proportional to 90,040.61, 135,067.75 and 26,855.79 is: 40,285.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,040.61 : 135,067.75 = 26,855.79 : x
  2. Step 2: Convert to fraction form
    90,040.61/135,067.75 = 26,855.79/x
  3. Step 3: Cross multiply
    90,040.61x = 135,067.75 × 26,855.79
  4. Step 4: Simplify right side
    90,040.61x = 3,627,351,277.01
  5. Step 5: Solve for x
    x = 3,627,351,277.01/90,040.61
  6. Step 6: Final answer
    x = 40,285.72

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1.5x scale

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.