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Finding the Fourth Proportional to 65,593, 98,399.10 and 21,205

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Solution

The fourth proportional to 65,593, 98,399.10 and 21,205 is: 31,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,593 : 98,399.10 = 21,205 : x
  2. Step 2: Convert to fraction form
    65,593/98,399.10 = 21,205/x
  3. Step 3: Cross multiply
    65,593x = 98,399.10 × 21,205
  4. Step 4: Simplify right side
    65,593x = 2,086,552,915.50
  5. Step 5: Solve for x
    x = 2,086,552,915.50/65,593
  6. Step 6: Final answer
    x = 31,810.60

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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.