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Finding the Fourth Proportional to 84,808.26, 127,227.05 and 28,648.77

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Solution

The fourth proportional to 84,808.26, 127,227.05 and 28,648.77 is: 42,978.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,808.26 : 127,227.05 = 28,648.77 : x
  2. Step 2: Convert to fraction form
    84,808.26/127,227.05 = 28,648.77/x
  3. Step 3: Cross multiply
    84,808.26x = 127,227.05 × 28,648.77
  4. Step 4: Simplify right side
    84,808.26x = 3,644,898,349.98
  5. Step 5: Solve for x
    x = 3,644,898,349.98/84,808.26
  6. Step 6: Final answer
    x = 42,978.11

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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.