Home / 90,855.72-125,384.54-50,571.18

Finding the Fourth Proportional to 90,855.72, 125,384.54 and 50,571.18

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Solution

The fourth proportional to 90,855.72, 125,384.54 and 50,571.18 is: 69,790.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,855.72 : 125,384.54 = 50,571.18 : x
  2. Step 2: Convert to fraction form
    90,855.72/125,384.54 = 50,571.18/x
  3. Step 3: Cross multiply
    90,855.72x = 125,384.54 × 50,571.18
  4. Step 4: Simplify right side
    90,855.72x = 6,340,843,888.70
  5. Step 5: Solve for x
    x = 6,340,843,888.70/90,855.72
  6. Step 6: Final answer
    x = 69,790.26

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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.