Home / 81,374.17-121,977.65-34,016.96

Finding the Fourth Proportional to 81,374.17, 121,977.65 and 34,016.96

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Solution

The fourth proportional to 81,374.17, 121,977.65 and 34,016.96 is: 50,990.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,374.17 : 121,977.65 = 34,016.96 : x
  2. Step 2: Convert to fraction form
    81,374.17/121,977.65 = 34,016.96/x
  3. Step 3: Cross multiply
    81,374.17x = 121,977.65 × 34,016.96
  4. Step 4: Simplify right side
    81,374.17x = 4,149,309,039.59
  5. Step 5: Solve for x
    x = 4,149,309,039.59/81,374.17
  6. Step 6: Final answer
    x = 50,990.49

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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.