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Finding the Fourth Proportional to 60,736.78, 91,145.84 and 21,293.88

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Solution

The fourth proportional to 60,736.78, 91,145.84 and 21,293.88 is: 31,955.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,736.78 : 91,145.84 = 21,293.88 : x
  2. Step 2: Convert to fraction form
    60,736.78/91,145.84 = 21,293.88/x
  3. Step 3: Cross multiply
    60,736.78x = 91,145.84 × 21,293.88
  4. Step 4: Simplify right side
    60,736.78x = 1,940,848,579.46
  5. Step 5: Solve for x
    x = 1,940,848,579.46/60,736.78
  6. Step 6: Final answer
    x = 31,955.08

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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.