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Finding the Fourth Proportional to 84,858.10, 127,287.15 and 82,914.10

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Solution

The fourth proportional to 84,858.10, 127,287.15 and 82,914.10 is: 124,371.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,858.10 : 127,287.15 = 82,914.10 : x
  2. Step 2: Convert to fraction form
    84,858.10/127,287.15 = 82,914.10/x
  3. Step 3: Cross multiply
    84,858.10x = 127,287.15 × 82,914.10
  4. Step 4: Simplify right side
    84,858.10x = 10,553,899,483.82
  5. Step 5: Solve for x
    x = 10,553,899,483.82/84,858.10
  6. Step 6: Final answer
    x = 124,371.15

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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.