Home / 81,645.12-122,500.32-37,292.80

Finding the Fourth Proportional to 81,645.12, 122,500.32 and 37,292.80

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Solution

The fourth proportional to 81,645.12, 122,500.32 and 37,292.80 is: 55,954.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,645.12 : 122,500.32 = 37,292.80 : x
  2. Step 2: Convert to fraction form
    81,645.12/122,500.32 = 37,292.80/x
  3. Step 3: Cross multiply
    81,645.12x = 122,500.32 × 37,292.80
  4. Step 4: Simplify right side
    81,645.12x = 4,568,379,933.70
  5. Step 5: Solve for x
    x = 4,568,379,933.70/81,645.12
  6. Step 6: Final answer
    x = 55,954.11

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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.