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Finding the Fourth Proportional to 65,468.16, 90,399.36 and 53,370.54

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Solution

The fourth proportional to 65,468.16, 90,399.36 and 53,370.54 is: 73,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,468.16 : 90,399.36 = 53,370.54 : x
  2. Step 2: Convert to fraction form
    65,468.16/90,399.36 = 53,370.54/x
  3. Step 3: Cross multiply
    65,468.16x = 90,399.36 × 53,370.54
  4. Step 4: Simplify right side
    65,468.16x = 4,824,662,658.85
  5. Step 5: Solve for x
    x = 4,824,662,658.85/65,468.16
  6. Step 6: Final answer
    x = 73,694.80

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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.