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Finding the Fourth Proportional to 65,764.56, 98,679.24 and 40,798.20

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Solution

The fourth proportional to 65,764.56, 98,679.24 and 40,798.20 is: 61,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,764.56 : 98,679.24 = 40,798.20 : x
  2. Step 2: Convert to fraction form
    65,764.56/98,679.24 = 40,798.20/x
  3. Step 3: Cross multiply
    65,764.56x = 98,679.24 × 40,798.20
  4. Step 4: Simplify right side
    65,764.56x = 4,025,935,369.37
  5. Step 5: Solve for x
    x = 4,025,935,369.37/65,764.56
  6. Step 6: Final answer
    x = 61,217.40

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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.