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Finding the Fourth Proportional to 79,672.80, 119,314.80 and 76,173.60

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Solution

The fourth proportional to 79,672.80, 119,314.80 and 76,173.60 is: 114,074.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,672.80 : 119,314.80 = 76,173.60 : x
  2. Step 2: Convert to fraction form
    79,672.80/119,314.80 = 76,173.60/x
  3. Step 3: Cross multiply
    79,672.80x = 119,314.80 × 76,173.60
  4. Step 4: Simplify right side
    79,672.80x = 9,088,637,849.28
  5. Step 5: Solve for x
    x = 9,088,637,849.28/79,672.80
  6. Step 6: Final answer
    x = 114,074.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.