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Finding the Fourth Proportional to 79,871.77, 119,804.20 and 19,900.52

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Solution

The fourth proportional to 79,871.77, 119,804.20 and 19,900.52 is: 29,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,871.77 : 119,804.20 = 19,900.52 : x
  2. Step 2: Convert to fraction form
    79,871.77/119,804.20 = 19,900.52/x
  3. Step 3: Cross multiply
    79,871.77x = 119,804.20 × 19,900.52
  4. Step 4: Simplify right side
    79,871.77x = 2,384,165,678.68
  5. Step 5: Solve for x
    x = 2,384,165,678.68/79,871.77
  6. Step 6: Final answer
    x = 29,849.92

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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.