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Finding the Fourth Proportional to 73,379, 101,263.02 and 39,845

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Solution

The fourth proportional to 73,379, 101,263.02 and 39,845 is: 54,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,379 : 101,263.02 = 39,845 : x
  2. Step 2: Convert to fraction form
    73,379/101,263.02 = 39,845/x
  3. Step 3: Cross multiply
    73,379x = 101,263.02 × 39,845
  4. Step 4: Simplify right side
    73,379x = 4,034,825,031.90
  5. Step 5: Solve for x
    x = 4,034,825,031.90/73,379
  6. Step 6: Final answer
    x = 54,986.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.