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Finding the Fourth Proportional to 65,371.52, 90,183.84 and 43,572.80

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Solution

The fourth proportional to 65,371.52, 90,183.84 and 43,572.80 is: 60,111.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,371.52 : 90,183.84 = 43,572.80 : x
  2. Step 2: Convert to fraction form
    65,371.52/90,183.84 = 43,572.80/x
  3. Step 3: Cross multiply
    65,371.52x = 90,183.84 × 43,572.80
  4. Step 4: Simplify right side
    65,371.52x = 3,929,562,423.55
  5. Step 5: Solve for x
    x = 3,929,562,423.55/65,371.52
  6. Step 6: Final answer
    x = 60,111.23

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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.