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Finding the Fourth Proportional to 65,635.85, 98,441.90 and 18,877.25

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Solution

The fourth proportional to 65,635.85, 98,441.90 and 18,877.25 is: 28,312.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,635.85 : 98,441.90 = 18,877.25 : x
  2. Step 2: Convert to fraction form
    65,635.85/98,441.90 = 18,877.25/x
  3. Step 3: Cross multiply
    65,635.85x = 98,441.90 × 18,877.25
  4. Step 4: Simplify right side
    65,635.85x = 1,858,312,262.39
  5. Step 5: Solve for x
    x = 1,858,312,262.39/65,635.85
  6. Step 6: Final answer
    x = 28,312.46

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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.