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Finding the Fourth Proportional to 71,377.90, 107,066.85 and 68,656.30

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Solution

The fourth proportional to 71,377.90, 107,066.85 and 68,656.30 is: 102,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,377.90 : 107,066.85 = 68,656.30 : x
  2. Step 2: Convert to fraction form
    71,377.90/107,066.85 = 68,656.30/x
  3. Step 3: Cross multiply
    71,377.90x = 107,066.85 × 68,656.30
  4. Step 4: Simplify right side
    71,377.90x = 7,350,813,773.66
  5. Step 5: Solve for x
    x = 7,350,813,773.66/71,377.90
  6. Step 6: Final answer
    x = 102,984.45

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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.