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Finding the Fourth Proportional to 84,814.80, 127,027.80 and 82,870.80

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Solution

The fourth proportional to 84,814.80, 127,027.80 and 82,870.80 is: 124,116.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,814.80 : 127,027.80 = 82,870.80 : x
  2. Step 2: Convert to fraction form
    84,814.80/127,027.80 = 82,870.80/x
  3. Step 3: Cross multiply
    84,814.80x = 127,027.80 × 82,870.80
  4. Step 4: Simplify right side
    84,814.80x = 10,526,895,408.24
  5. Step 5: Solve for x
    x = 10,526,895,408.24/84,814.80
  6. Step 6: Final answer
    x = 124,116.26

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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.