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Finding the Fourth Proportional to 66,656.95, 91,988.33 and 36,443.54

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Solution

The fourth proportional to 66,656.95, 91,988.33 and 36,443.54 is: 50,293.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,656.95 : 91,988.33 = 36,443.54 : x
  2. Step 2: Convert to fraction form
    66,656.95/91,988.33 = 36,443.54/x
  3. Step 3: Cross multiply
    66,656.95x = 91,988.33 × 36,443.54
  4. Step 4: Simplify right side
    66,656.95x = 3,352,380,431.64
  5. Step 5: Solve for x
    x = 3,352,380,431.64/66,656.95
  6. Step 6: Final answer
    x = 50,293.04

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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.