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Finding the Fourth Proportional to 65,999.20, 98,917.80 and 44,939.20

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Solution

The fourth proportional to 65,999.20, 98,917.80 and 44,939.20 is: 67,353.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,999.20 : 98,917.80 = 44,939.20 : x
  2. Step 2: Convert to fraction form
    65,999.20/98,917.80 = 44,939.20/x
  3. Step 3: Cross multiply
    65,999.20x = 98,917.80 × 44,939.20
  4. Step 4: Simplify right side
    65,999.20x = 4,445,286,797.76
  5. Step 5: Solve for x
    x = 4,445,286,797.76/65,999.20
  6. Step 6: Final answer
    x = 67,353.65

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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.