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Finding the Fourth Proportional to 78,729.80, 108,650.03 and 44,744.02

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Solution

The fourth proportional to 78,729.80, 108,650.03 and 44,744.02 is: 61,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,729.80 : 108,650.03 = 44,744.02 : x
  2. Step 2: Convert to fraction form
    78,729.80/108,650.03 = 44,744.02/x
  3. Step 3: Cross multiply
    78,729.80x = 108,650.03 × 44,744.02
  4. Step 4: Simplify right side
    78,729.80x = 4,861,438,619.98
  5. Step 5: Solve for x
    x = 4,861,438,619.98/78,729.80
  6. Step 6: Final answer
    x = 61,748.40

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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.