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Finding the Fourth Proportional to 73,445.90, 109,997.99 and 71,425.58

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Solution

The fourth proportional to 73,445.90, 109,997.99 and 71,425.58 is: 106,972.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,445.90 : 109,997.99 = 71,425.58 : x
  2. Step 2: Convert to fraction form
    73,445.90/109,997.99 = 71,425.58/x
  3. Step 3: Cross multiply
    73,445.90x = 109,997.99 × 71,425.58
  4. Step 4: Simplify right side
    73,445.90x = 7,856,670,152.45
  5. Step 5: Solve for x
    x = 7,856,670,152.45/73,445.90
  6. Step 6: Final answer
    x = 106,972.21

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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.