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Finding the Fourth Proportional to 79,899, 119,240.95 and 71,041.96

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Solution

The fourth proportional to 79,899, 119,240.95 and 71,041.96 is: 106,022.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,899 : 119,240.95 = 71,041.96 : x
  2. Step 2: Convert to fraction form
    79,899/119,240.95 = 71,041.96/x
  3. Step 3: Cross multiply
    79,899x = 119,240.95 × 71,041.96
  4. Step 4: Simplify right side
    79,899x = 8,471,110,800.26
  5. Step 5: Solve for x
    x = 8,471,110,800.26/79,899
  6. Step 6: Final answer
    x = 106,022.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.