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Finding the Fourth Proportional to 104,453.85, 144,100.06 and 61,987.78

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Solution

The fourth proportional to 104,453.85, 144,100.06 and 61,987.78 is: 85,515.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,453.85 : 144,100.06 = 61,987.78 : x
  2. Step 2: Convert to fraction form
    104,453.85/144,100.06 = 61,987.78/x
  3. Step 3: Cross multiply
    104,453.85x = 144,100.06 × 61,987.78
  4. Step 4: Simplify right side
    104,453.85x = 8,932,443,191.10
  5. Step 5: Solve for x
    x = 8,932,443,191.10/104,453.85
  6. Step 6: Final answer
    x = 85,515.69

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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.