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Finding the Fourth Proportional to 79,398.83, 119,007.63 and 31,983.54

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Solution

The fourth proportional to 79,398.83, 119,007.63 and 31,983.54 is: 47,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,398.83 : 119,007.63 = 31,983.54 : x
  2. Step 2: Convert to fraction form
    79,398.83/119,007.63 = 31,983.54/x
  3. Step 3: Cross multiply
    79,398.83x = 119,007.63 × 31,983.54
  4. Step 4: Simplify right side
    79,398.83x = 3,806,285,294.41
  5. Step 5: Solve for x
    x = 3,806,285,294.41/79,398.83
  6. Step 6: Final answer
    x = 47,938.81

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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.