Home / 81,314.14-121,905.46-33,965.50

Finding the Fourth Proportional to 81,314.14, 121,905.46 and 33,965.50

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Solution

The fourth proportional to 81,314.14, 121,905.46 and 33,965.50 is: 50,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,314.14 : 121,905.46 = 33,965.50 : x
  2. Step 2: Convert to fraction form
    81,314.14/121,905.46 = 33,965.50/x
  3. Step 3: Cross multiply
    81,314.14x = 121,905.46 × 33,965.50
  4. Step 4: Simplify right side
    81,314.14x = 4,140,579,901.63
  5. Step 5: Solve for x
    x = 4,140,579,901.63/81,314.14
  6. Step 6: Final answer
    x = 50,920.79

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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.