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Finding the Fourth Proportional to 66,374.56, 91,595.64 and 36,160.48

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Solution

The fourth proportional to 66,374.56, 91,595.64 and 36,160.48 is: 49,900.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,374.56 : 91,595.64 = 36,160.48 : x
  2. Step 2: Convert to fraction form
    66,374.56/91,595.64 = 36,160.48/x
  3. Step 3: Cross multiply
    66,374.56x = 91,595.64 × 36,160.48
  4. Step 4: Simplify right side
    66,374.56x = 3,312,142,308.31
  5. Step 5: Solve for x
    x = 3,312,142,308.31/66,374.56
  6. Step 6: Final answer
    x = 49,900.78

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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.