Home / 81,162.90-121,744.35-33,777.09

Finding the Fourth Proportional to 81,162.90, 121,744.35 and 33,777.09

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Solution

The fourth proportional to 81,162.90, 121,744.35 and 33,777.09 is: 50,665.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,162.90 : 121,744.35 = 33,777.09 : x
  2. Step 2: Convert to fraction form
    81,162.90/121,744.35 = 33,777.09/x
  3. Step 3: Cross multiply
    81,162.90x = 121,744.35 × 33,777.09
  4. Step 4: Simplify right side
    81,162.90x = 4,112,169,866.94
  5. Step 5: Solve for x
    x = 4,112,169,866.94/81,162.90
  6. Step 6: Final answer
    x = 50,665.64

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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.