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Finding the Fourth Proportional to 65,961.73, 98,887.11 and 21,564.28

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Solution

The fourth proportional to 65,961.73, 98,887.11 and 21,564.28 is: 32,328.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,961.73 : 98,887.11 = 21,564.28 : x
  2. Step 2: Convert to fraction form
    65,961.73/98,887.11 = 21,564.28/x
  3. Step 3: Cross multiply
    65,961.73x = 98,887.11 × 21,564.28
  4. Step 4: Simplify right side
    65,961.73x = 2,132,429,328.43
  5. Step 5: Solve for x
    x = 2,132,429,328.43/65,961.73
  6. Step 6: Final answer
    x = 32,328.28

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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.