Home / 81,150.67-121,727.35-36,777.80

Finding the Fourth Proportional to 81,150.67, 121,727.35 and 36,777.80

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Solution

The fourth proportional to 81,150.67, 121,727.35 and 36,777.80 is: 55,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,150.67 : 121,727.35 = 36,777.80 : x
  2. Step 2: Convert to fraction form
    81,150.67/121,727.35 = 36,777.80/x
  3. Step 3: Cross multiply
    81,150.67x = 121,727.35 × 36,777.80
  4. Step 4: Simplify right side
    81,150.67x = 4,476,863,524.19
  5. Step 5: Solve for x
    x = 4,476,863,524.19/81,150.67
  6. Step 6: Final answer
    x = 55,167.31

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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.