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Finding the Fourth Proportional to 65,474.62, 90,352.62 and 40,023.64

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Solution

The fourth proportional to 65,474.62, 90,352.62 and 40,023.64 is: 55,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,474.62 : 90,352.62 = 40,023.64 : x
  2. Step 2: Convert to fraction form
    65,474.62/90,352.62 = 40,023.64/x
  3. Step 3: Cross multiply
    65,474.62x = 90,352.62 × 40,023.64
  4. Step 4: Simplify right side
    65,474.62x = 3,616,240,735.94
  5. Step 5: Solve for x
    x = 3,616,240,735.94/65,474.62
  6. Step 6: Final answer
    x = 55,231.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.