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Finding the Fourth Proportional to 66,360.76, 91,575.22 and 36,145.60

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Solution

The fourth proportional to 66,360.76, 91,575.22 and 36,145.60 is: 49,879.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,360.76 : 91,575.22 = 36,145.60 : x
  2. Step 2: Convert to fraction form
    66,360.76/91,575.22 = 36,145.60/x
  3. Step 3: Cross multiply
    66,360.76x = 91,575.22 × 36,145.60
  4. Step 4: Simplify right side
    66,360.76x = 3,310,041,272.03
  5. Step 5: Solve for x
    x = 3,310,041,272.03/66,360.76
  6. Step 6: Final answer
    x = 49,879.50

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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.