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Finding the Fourth Proportional to 84,849.28, 127,347.72 and 55,300.28

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Solution

The fourth proportional to 84,849.28, 127,347.72 and 55,300.28 is: 82,998.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,849.28 : 127,347.72 = 55,300.28 : x
  2. Step 2: Convert to fraction form
    84,849.28/127,347.72 = 55,300.28/x
  3. Step 3: Cross multiply
    84,849.28x = 127,347.72 × 55,300.28
  4. Step 4: Simplify right side
    84,849.28x = 7,042,364,573.36
  5. Step 5: Solve for x
    x = 7,042,364,573.36/84,849.28
  6. Step 6: Final answer
    x = 82,998.52

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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.