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Finding the Fourth Proportional to 60,871.36, 91,333.44 and 21,456.64

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Solution

The fourth proportional to 60,871.36, 91,333.44 and 21,456.64 is: 32,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,871.36 : 91,333.44 = 21,456.64 : x
  2. Step 2: Convert to fraction form
    60,871.36/91,333.44 = 21,456.64/x
  3. Step 3: Cross multiply
    60,871.36x = 91,333.44 × 21,456.64
  4. Step 4: Simplify right side
    60,871.36x = 1,959,708,742.04
  5. Step 5: Solve for x
    x = 1,959,708,742.04/60,871.36
  6. Step 6: Final answer
    x = 32,194.27

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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.