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Finding the Fourth Proportional to 78,250.53, 108,002.79 and 48,051.72

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Solution

The fourth proportional to 78,250.53, 108,002.79 and 48,051.72 is: 66,321.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,250.53 : 108,002.79 = 48,051.72 : x
  2. Step 2: Convert to fraction form
    78,250.53/108,002.79 = 48,051.72/x
  3. Step 3: Cross multiply
    78,250.53x = 108,002.79 × 48,051.72
  4. Step 4: Simplify right side
    78,250.53x = 5,189,719,824.30
  5. Step 5: Solve for x
    x = 5,189,719,824.30/78,250.53
  6. Step 6: Final answer
    x = 66,321.85

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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.