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Finding the Fourth Proportional to 65,985.20, 98,999.52 and 43,885.52

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Solution

The fourth proportional to 65,985.20, 98,999.52 and 43,885.52 is: 65,842.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,985.20 : 98,999.52 = 43,885.52 : x
  2. Step 2: Convert to fraction form
    65,985.20/98,999.52 = 43,885.52/x
  3. Step 3: Cross multiply
    65,985.20x = 98,999.52 × 43,885.52
  4. Step 4: Simplify right side
    65,985.20x = 4,344,645,414.95
  5. Step 5: Solve for x
    x = 4,344,645,414.95/65,985.20
  6. Step 6: Final answer
    x = 65,842.73

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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.