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Finding the Fourth Proportional to 65,344.64, 90,161.67 and 38,477.33

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Solution

The fourth proportional to 65,344.64, 90,161.67 and 38,477.33 is: 53,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,344.64 : 90,161.67 = 38,477.33 : x
  2. Step 2: Convert to fraction form
    65,344.64/90,161.67 = 38,477.33/x
  3. Step 3: Cross multiply
    65,344.64x = 90,161.67 × 38,477.33
  4. Step 4: Simplify right side
    65,344.64x = 3,469,180,329.94
  5. Step 5: Solve for x
    x = 3,469,180,329.94/65,344.64
  6. Step 6: Final answer
    x = 53,090.51

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1.5x scale

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.