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Finding the Fourth Proportional to 65,745.60, 98,621.60 and 18,360.64

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Solution

The fourth proportional to 65,745.60, 98,621.60 and 18,360.64 is: 27,541.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,745.60 : 98,621.60 = 18,360.64 : x
  2. Step 2: Convert to fraction form
    65,745.60/98,621.60 = 18,360.64/x
  3. Step 3: Cross multiply
    65,745.60x = 98,621.60 × 18,360.64
  4. Step 4: Simplify right side
    65,745.60x = 1,810,755,693.82
  5. Step 5: Solve for x
    x = 1,810,755,693.82/65,745.60
  6. Step 6: Final answer
    x = 27,541.85

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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.