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Finding the Fourth Proportional to 78,369.62, 108,183.17 and 52,910.46

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Solution

The fourth proportional to 78,369.62, 108,183.17 and 52,910.46 is: 73,038.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,369.62 : 108,183.17 = 52,910.46 : x
  2. Step 2: Convert to fraction form
    78,369.62/108,183.17 = 52,910.46/x
  3. Step 3: Cross multiply
    78,369.62x = 108,183.17 × 52,910.46
  4. Step 4: Simplify right side
    78,369.62x = 5,724,021,024.41
  5. Step 5: Solve for x
    x = 5,724,021,024.41/78,369.62
  6. Step 6: Final answer
    x = 73,038.78

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1.5x scale

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.