Home / 90,656.94-125,115.03-54,855.78

Finding the Fourth Proportional to 90,656.94, 125,115.03 and 54,855.78

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Solution

The fourth proportional to 90,656.94, 125,115.03 and 54,855.78 is: 75,706.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,656.94 : 125,115.03 = 54,855.78 : x
  2. Step 2: Convert to fraction form
    90,656.94/125,115.03 = 54,855.78/x
  3. Step 3: Cross multiply
    90,656.94x = 125,115.03 × 54,855.78
  4. Step 4: Simplify right side
    90,656.94x = 6,863,282,560.37
  5. Step 5: Solve for x
    x = 6,863,282,560.37/90,656.94
  6. Step 6: Final answer
    x = 75,706.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.