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Finding the Fourth Proportional to 65,563.68, 90,473.22 and 38,704.80

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Solution

The fourth proportional to 65,563.68, 90,473.22 and 38,704.80 is: 53,409.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,563.68 : 90,473.22 = 38,704.80 : x
  2. Step 2: Convert to fraction form
    65,563.68/90,473.22 = 38,704.80/x
  3. Step 3: Cross multiply
    65,563.68x = 90,473.22 × 38,704.80
  4. Step 4: Simplify right side
    65,563.68x = 3,501,747,885.46
  5. Step 5: Solve for x
    x = 3,501,747,885.46/65,563.68
  6. Step 6: Final answer
    x = 53,409.87

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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.