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Finding the Fourth Proportional to 66,778.86, 92,151.32 and 36,558.40

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Solution

The fourth proportional to 66,778.86, 92,151.32 and 36,558.40 is: 50,448.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,778.86 : 92,151.32 = 36,558.40 : x
  2. Step 2: Convert to fraction form
    66,778.86/92,151.32 = 36,558.40/x
  3. Step 3: Cross multiply
    66,778.86x = 92,151.32 × 36,558.40
  4. Step 4: Simplify right side
    66,778.86x = 3,368,904,817.09
  5. Step 5: Solve for x
    x = 3,368,904,817.09/66,778.86
  6. Step 6: Final answer
    x = 50,448.67

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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.