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Finding the Fourth Proportional to 84,813.80, 127,279 and 29,409.80

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Solution

The fourth proportional to 84,813.80, 127,279 and 29,409.80 is: 44,134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,813.80 : 127,279 = 29,409.80 : x
  2. Step 2: Convert to fraction form
    84,813.80/127,279 = 29,409.80/x
  3. Step 3: Cross multiply
    84,813.80x = 127,279 × 29,409.80
  4. Step 4: Simplify right side
    84,813.80x = 3,743,249,934.20
  5. Step 5: Solve for x
    x = 3,743,249,934.20/84,813.80
  6. Step 6: Final answer
    x = 44,134.92

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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.