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Finding the Fourth Proportional to 65,910.56, 98,878.56 and 21,525.38

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Solution

The fourth proportional to 65,910.56, 98,878.56 and 21,525.38 is: 32,292.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,910.56 : 98,878.56 = 21,525.38 : x
  2. Step 2: Convert to fraction form
    65,910.56/98,878.56 = 21,525.38/x
  3. Step 3: Cross multiply
    65,910.56x = 98,878.56 × 21,525.38
  4. Step 4: Simplify right side
    65,910.56x = 2,128,398,577.85
  5. Step 5: Solve for x
    x = 2,128,398,577.85/65,910.56
  6. Step 6: Final answer
    x = 32,292.22

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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.