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Finding the Fourth Proportional to 84,994.65, 127,491.48 and 21,814.65

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Solution

The fourth proportional to 84,994.65, 127,491.48 and 21,814.65 is: 32,721.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,994.65 : 127,491.48 = 21,814.65 : x
  2. Step 2: Convert to fraction form
    84,994.65/127,491.48 = 21,814.65/x
  3. Step 3: Cross multiply
    84,994.65x = 127,491.48 × 21,814.65
  4. Step 4: Simplify right side
    84,994.65x = 2,781,182,014.18
  5. Step 5: Solve for x
    x = 2,781,182,014.18/84,994.65
  6. Step 6: Final answer
    x = 32,721.85

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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.