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Finding the Fourth Proportional to 71,997.93, 107,989.60 and 19,412.73

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Solution

The fourth proportional to 71,997.93, 107,989.60 and 19,412.73 is: 29,117.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,997.93 : 107,989.60 = 19,412.73 : x
  2. Step 2: Convert to fraction form
    71,997.93/107,989.60 = 19,412.73/x
  3. Step 3: Cross multiply
    71,997.93x = 107,989.60 × 19,412.73
  4. Step 4: Simplify right side
    71,997.93x = 2,096,372,947.61
  5. Step 5: Solve for x
    x = 2,096,372,947.61/71,997.93
  6. Step 6: Final answer
    x = 29,117.13

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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.