Home / 80,474.87-111,075.74-54,991.55

Finding the Fourth Proportional to 80,474.87, 111,075.74 and 54,991.55

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Solution

The fourth proportional to 80,474.87, 111,075.74 and 54,991.55 is: 75,902.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,474.87 : 111,075.74 = 54,991.55 : x
  2. Step 2: Convert to fraction form
    80,474.87/111,075.74 = 54,991.55/x
  3. Step 3: Cross multiply
    80,474.87x = 111,075.74 × 54,991.55
  4. Step 4: Simplify right side
    80,474.87x = 6,108,226,279.66
  5. Step 5: Solve for x
    x = 6,108,226,279.66/80,474.87
  6. Step 6: Final answer
    x = 75,902.29

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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.