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Finding the Fourth Proportional to 65,930.95, 98,914.29 and 21,551.86

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Solution

The fourth proportional to 65,930.95, 98,914.29 and 21,551.86 is: 32,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,930.95 : 98,914.29 = 21,551.86 : x
  2. Step 2: Convert to fraction form
    65,930.95/98,914.29 = 21,551.86/x
  3. Step 3: Cross multiply
    65,930.95x = 98,914.29 × 21,551.86
  4. Step 4: Simplify right side
    65,930.95x = 2,131,786,930.08
  5. Step 5: Solve for x
    x = 2,131,786,930.08/65,930.95
  6. Step 6: Final answer
    x = 32,333.63

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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.