Home / 81,949.20-122,923.80-26,545.20

Finding the Fourth Proportional to 81,949.20, 122,923.80 and 26,545.20

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Solution

The fourth proportional to 81,949.20, 122,923.80 and 26,545.20 is: 39,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,949.20 : 122,923.80 = 26,545.20 : x
  2. Step 2: Convert to fraction form
    81,949.20/122,923.80 = 26,545.20/x
  3. Step 3: Cross multiply
    81,949.20x = 122,923.80 × 26,545.20
  4. Step 4: Simplify right side
    81,949.20x = 3,263,036,855.76
  5. Step 5: Solve for x
    x = 3,263,036,855.76/81,949.20
  6. Step 6: Final answer
    x = 39,817.80

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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.