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Finding the Fourth Proportional to 65,368.87, 90,205.26 and 36,685.86

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Solution

The fourth proportional to 65,368.87, 90,205.26 and 36,685.86 is: 50,624.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,368.87 : 90,205.26 = 36,685.86 : x
  2. Step 2: Convert to fraction form
    65,368.87/90,205.26 = 36,685.86/x
  3. Step 3: Cross multiply
    65,368.87x = 90,205.26 × 36,685.86
  4. Step 4: Simplify right side
    65,368.87x = 3,309,257,777.54
  5. Step 5: Solve for x
    x = 3,309,257,777.54/65,368.87
  6. Step 6: Final answer
    x = 50,624.37

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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.