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Finding the Fourth Proportional to 65,336.86, 90,215.65 and 50,205.67

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Solution

The fourth proportional to 65,336.86, 90,215.65 and 50,205.67 is: 69,322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,336.86 : 90,215.65 = 50,205.67 : x
  2. Step 2: Convert to fraction form
    65,336.86/90,215.65 = 50,205.67/x
  3. Step 3: Cross multiply
    65,336.86x = 90,215.65 × 50,205.67
  4. Step 4: Simplify right side
    65,336.86x = 4,529,336,701.66
  5. Step 5: Solve for x
    x = 4,529,336,701.66/65,336.86
  6. Step 6: Final answer
    x = 69,322.85

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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.