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Finding the Fourth Proportional to 66,585, 91,887.30 and 36,778.92

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Solution

The fourth proportional to 66,585, 91,887.30 and 36,778.92 is: 50,754.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,585 : 91,887.30 = 36,778.92 : x
  2. Step 2: Convert to fraction form
    66,585/91,887.30 = 36,778.92/x
  3. Step 3: Cross multiply
    66,585x = 91,887.30 × 36,778.92
  4. Step 4: Simplify right side
    66,585x = 3,379,515,655.72
  5. Step 5: Solve for x
    x = 3,379,515,655.72/66,585
  6. Step 6: Final answer
    x = 50,754.91

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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.