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Finding the Fourth Proportional to 84,912, 127,387.44 and 29,508

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Solution

The fourth proportional to 84,912, 127,387.44 and 29,508 is: 44,268.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,912 : 127,387.44 = 29,508 : x
  2. Step 2: Convert to fraction form
    84,912/127,387.44 = 29,508/x
  3. Step 3: Cross multiply
    84,912x = 127,387.44 × 29,508
  4. Step 4: Simplify right side
    84,912x = 3,758,948,579.52
  5. Step 5: Solve for x
    x = 3,758,948,579.52/84,912
  6. Step 6: Final answer
    x = 44,268.76

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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.