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Finding the Fourth Proportional to 63,645.60, 87,811.16 and 36,778.32

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Solution

The fourth proportional to 63,645.60, 87,811.16 and 36,778.32 is: 50,742.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,645.60 : 87,811.16 = 36,778.32 : x
  2. Step 2: Convert to fraction form
    63,645.60/87,811.16 = 36,778.32/x
  3. Step 3: Cross multiply
    63,645.60x = 87,811.16 × 36,778.32
  4. Step 4: Simplify right side
    63,645.60x = 3,229,546,942.05
  5. Step 5: Solve for x
    x = 3,229,546,942.05/63,645.60
  6. Step 6: Final answer
    x = 50,742.66

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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.