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Finding the Fourth Proportional to 65,855.01, 90,880.02 and 35,640.35

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Solution

The fourth proportional to 65,855.01, 90,880.02 and 35,640.35 is: 49,183.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,855.01 : 90,880.02 = 35,640.35 : x
  2. Step 2: Convert to fraction form
    65,855.01/90,880.02 = 35,640.35/x
  3. Step 3: Cross multiply
    65,855.01x = 90,880.02 × 35,640.35
  4. Step 4: Simplify right side
    65,855.01x = 3,238,995,814.36
  5. Step 5: Solve for x
    x = 3,238,995,814.36/65,855.01
  6. Step 6: Final answer
    x = 49,183.74

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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.