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Finding the Fourth Proportional to 84,958.72, 127,464 and 43,434.88

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Solution

The fourth proportional to 84,958.72, 127,464 and 43,434.88 is: 65,165.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,958.72 : 127,464 = 43,434.88 : x
  2. Step 2: Convert to fraction form
    84,958.72/127,464 = 43,434.88/x
  3. Step 3: Cross multiply
    84,958.72x = 127,464 × 43,434.88
  4. Step 4: Simplify right side
    84,958.72x = 5,536,383,544.32
  5. Step 5: Solve for x
    x = 5,536,383,544.32/84,958.72
  6. Step 6: Final answer
    x = 65,165.57

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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.