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Finding the Fourth Proportional to 84,729, 127,093.50 and 29,325

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Solution

The fourth proportional to 84,729, 127,093.50 and 29,325 is: 43,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,729 : 127,093.50 = 29,325 : x
  2. Step 2: Convert to fraction form
    84,729/127,093.50 = 29,325/x
  3. Step 3: Cross multiply
    84,729x = 127,093.50 × 29,325
  4. Step 4: Simplify right side
    84,729x = 3,727,016,887.50
  5. Step 5: Solve for x
    x = 3,727,016,887.50/84,729
  6. Step 6: Final answer
    x = 43,987.50

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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.