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Finding the Fourth Proportional to 71,428.03, 107,159.90 and 50,409.10

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Solution

The fourth proportional to 71,428.03, 107,159.90 and 50,409.10 is: 75,626.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,428.03 : 107,159.90 = 50,409.10 : x
  2. Step 2: Convert to fraction form
    71,428.03/107,159.90 = 50,409.10/x
  3. Step 3: Cross multiply
    71,428.03x = 107,159.90 × 50,409.10
  4. Step 4: Simplify right side
    71,428.03x = 5,401,834,115.09
  5. Step 5: Solve for x
    x = 5,401,834,115.09/71,428.03
  6. Step 6: Final answer
    x = 75,626.25

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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.