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Finding the Fourth Proportional to 79,380.74, 119,008.64 and 54,344.93

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Solution

The fourth proportional to 79,380.74, 119,008.64 and 54,344.93 is: 81,474.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,380.74 : 119,008.64 = 54,344.93 : x
  2. Step 2: Convert to fraction form
    79,380.74/119,008.64 = 54,344.93/x
  3. Step 3: Cross multiply
    79,380.74x = 119,008.64 × 54,344.93
  4. Step 4: Simplify right side
    79,380.74x = 6,467,515,751.01
  5. Step 5: Solve for x
    x = 6,467,515,751.01/79,380.74
  6. Step 6: Final answer
    x = 81,474.62

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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.