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Finding the Fourth Proportional to 65,745.20, 98,666.40 and 43,551.20

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Solution

The fourth proportional to 65,745.20, 98,666.40 and 43,551.20 is: 65,358.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,745.20 : 98,666.40 = 43,551.20 : x
  2. Step 2: Convert to fraction form
    65,745.20/98,666.40 = 43,551.20/x
  3. Step 3: Cross multiply
    65,745.20x = 98,666.40 × 43,551.20
  4. Step 4: Simplify right side
    65,745.20x = 4,297,040,119.68
  5. Step 5: Solve for x
    x = 4,297,040,119.68/65,745.20
  6. Step 6: Final answer
    x = 65,358.99

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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.