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Finding the Fourth Proportional to 65,989.62, 98,963.91 and 21,606.48

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Solution

The fourth proportional to 65,989.62, 98,963.91 and 21,606.48 is: 32,403.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,989.62 : 98,963.91 = 21,606.48 : x
  2. Step 2: Convert to fraction form
    65,989.62/98,963.91 = 21,606.48/x
  3. Step 3: Cross multiply
    65,989.62x = 98,963.91 × 21,606.48
  4. Step 4: Simplify right side
    65,989.62x = 2,138,261,742.14
  5. Step 5: Solve for x
    x = 2,138,261,742.14/65,989.62
  6. Step 6: Final answer
    x = 32,403.00

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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.