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Finding the Fourth Proportional to 66,245.60, 91,420.11 and 36,031.59

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Solution

The fourth proportional to 66,245.60, 91,420.11 and 36,031.59 is: 49,724.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.60 : 91,420.11 = 36,031.59 : x
  2. Step 2: Convert to fraction form
    66,245.60/91,420.11 = 36,031.59/x
  3. Step 3: Cross multiply
    66,245.60x = 91,420.11 × 36,031.59
  4. Step 4: Simplify right side
    66,245.60x = 3,294,011,921.27
  5. Step 5: Solve for x
    x = 3,294,011,921.27/66,245.60
  6. Step 6: Final answer
    x = 49,724.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.