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Finding the Fourth Proportional to 79,923.84, 119,817.72 and 48,780.96

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Solution

The fourth proportional to 79,923.84, 119,817.72 and 48,780.96 is: 73,129.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,923.84 : 119,817.72 = 48,780.96 : x
  2. Step 2: Convert to fraction form
    79,923.84/119,817.72 = 48,780.96/x
  3. Step 3: Cross multiply
    79,923.84x = 119,817.72 × 48,780.96
  4. Step 4: Simplify right side
    79,923.84x = 5,844,823,406.61
  5. Step 5: Solve for x
    x = 5,844,823,406.61/79,923.84
  6. Step 6: Final answer
    x = 73,129.91

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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.