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Finding the Fourth Proportional to 65,585.40, 90,505.86 and 36,906.66

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Solution

The fourth proportional to 65,585.40, 90,505.86 and 36,906.66 is: 50,930.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,585.40 : 90,505.86 = 36,906.66 : x
  2. Step 2: Convert to fraction form
    65,585.40/90,505.86 = 36,906.66/x
  3. Step 3: Cross multiply
    65,585.40x = 90,505.86 × 36,906.66
  4. Step 4: Simplify right side
    65,585.40x = 3,340,269,003.03
  5. Step 5: Solve for x
    x = 3,340,269,003.03/65,585.40
  6. Step 6: Final answer
    x = 50,930.07

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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.