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Finding the Fourth Proportional to 65,610.57, 90,542.96 and 36,930.80

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Solution

The fourth proportional to 65,610.57, 90,542.96 and 36,930.80 is: 50,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,610.57 : 90,542.96 = 36,930.80 : x
  2. Step 2: Convert to fraction form
    65,610.57/90,542.96 = 36,930.80/x
  3. Step 3: Cross multiply
    65,610.57x = 90,542.96 × 36,930.80
  4. Step 4: Simplify right side
    65,610.57x = 3,343,823,309.80
  5. Step 5: Solve for x
    x = 3,343,823,309.80/65,610.57
  6. Step 6: Final answer
    x = 50,964.70

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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.