Home / 71,813.25-106,961.31-68,066.19

Finding the Fourth Proportional to 71,813.25, 106,961.31 and 68,066.19

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Solution

The fourth proportional to 71,813.25, 106,961.31 and 68,066.19 is: 101,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,813.25 : 106,961.31 = 68,066.19 : x
  2. Step 2: Convert to fraction form
    71,813.25/106,961.31 = 68,066.19/x
  3. Step 3: Cross multiply
    71,813.25x = 106,961.31 × 68,066.19
  4. Step 4: Simplify right side
    71,813.25x = 7,280,448,849.11
  5. Step 5: Solve for x
    x = 7,280,448,849.11/71,813.25
  6. Step 6: Final answer
    x = 101,380.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.