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Finding the Fourth Proportional to 79,430.62, 119,173.28 and 49,813.78

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Solution

The fourth proportional to 79,430.62, 119,173.28 and 49,813.78 is: 74,737.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,430.62 : 119,173.28 = 49,813.78 : x
  2. Step 2: Convert to fraction form
    79,430.62/119,173.28 = 49,813.78/x
  3. Step 3: Cross multiply
    79,430.62x = 119,173.28 × 49,813.78
  4. Step 4: Simplify right side
    79,430.62x = 5,936,471,551.80
  5. Step 5: Solve for x
    x = 5,936,471,551.80/79,430.62
  6. Step 6: Final answer
    x = 74,737.82

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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.