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Finding the Fourth Proportional to 103,885.85, 143,375.10 and 58,572.56

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Solution

The fourth proportional to 103,885.85, 143,375.10 and 58,572.56 is: 80,837.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,885.85 : 143,375.10 = 58,572.56 : x
  2. Step 2: Convert to fraction form
    103,885.85/143,375.10 = 58,572.56/x
  3. Step 3: Cross multiply
    103,885.85x = 143,375.10 × 58,572.56
  4. Step 4: Simplify right side
    103,885.85x = 8,397,846,647.26
  5. Step 5: Solve for x
    x = 8,397,846,647.26/103,885.85
  6. Step 6: Final answer
    x = 80,837.25

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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.