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Finding the Fourth Proportional to 65,764.20, 90,737.10 and 37,469.28

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Solution

The fourth proportional to 65,764.20, 90,737.10 and 37,469.28 is: 51,697.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,764.20 : 90,737.10 = 37,469.28 : x
  2. Step 2: Convert to fraction form
    65,764.20/90,737.10 = 37,469.28/x
  3. Step 3: Cross multiply
    65,764.20x = 90,737.10 × 37,469.28
  4. Step 4: Simplify right side
    65,764.20x = 3,399,853,806.29
  5. Step 5: Solve for x
    x = 3,399,853,806.29/65,764.20
  6. Step 6: Final answer
    x = 51,697.64

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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.