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Finding the Fourth Proportional to 79,973.70, 119,708.98 and 54,866.94

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Solution

The fourth proportional to 79,973.70, 119,708.98 and 54,866.94 is: 82,127.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,973.70 : 119,708.98 = 54,866.94 : x
  2. Step 2: Convert to fraction form
    79,973.70/119,708.98 = 54,866.94/x
  3. Step 3: Cross multiply
    79,973.70x = 119,708.98 × 54,866.94
  4. Step 4: Simplify right side
    79,973.70x = 6,568,065,423.12
  5. Step 5: Solve for x
    x = 6,568,065,423.12/79,973.70
  6. Step 6: Final answer
    x = 82,127.82

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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.