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Finding the Fourth Proportional to 79,385.92, 119,048.88 and 31,984.94

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Solution

The fourth proportional to 79,385.92, 119,048.88 and 31,984.94 is: 47,965.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,385.92 : 119,048.88 = 31,984.94 : x
  2. Step 2: Convert to fraction form
    79,385.92/119,048.88 = 31,984.94/x
  3. Step 3: Cross multiply
    79,385.92x = 119,048.88 × 31,984.94
  4. Step 4: Simplify right side
    79,385.92x = 3,807,771,283.87
  5. Step 5: Solve for x
    x = 3,807,771,283.87/79,385.92
  6. Step 6: Final answer
    x = 47,965.32

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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.