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Finding the Fourth Proportional to 71,551.01, 107,333.86 and 18,960.49

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Solution

The fourth proportional to 71,551.01, 107,333.86 and 18,960.49 is: 28,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,551.01 : 107,333.86 = 18,960.49 : x
  2. Step 2: Convert to fraction form
    71,551.01/107,333.86 = 18,960.49/x
  3. Step 3: Cross multiply
    71,551.01x = 107,333.86 × 18,960.49
  4. Step 4: Simplify right side
    71,551.01x = 2,035,102,737.06
  5. Step 5: Solve for x
    x = 2,035,102,737.06/71,551.01
  6. Step 6: Final answer
    x = 28,442.68

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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.