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Finding the Fourth Proportional to 66,209.54, 91,370.88 and 35,996.90

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Solution

The fourth proportional to 66,209.54, 91,370.88 and 35,996.90 is: 49,676.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,209.54 : 91,370.88 = 35,996.90 : x
  2. Step 2: Convert to fraction form
    66,209.54/91,370.88 = 35,996.90/x
  3. Step 3: Cross multiply
    66,209.54x = 91,370.88 × 35,996.90
  4. Step 4: Simplify right side
    66,209.54x = 3,289,068,430.27
  5. Step 5: Solve for x
    x = 3,289,068,430.27/66,209.54
  6. Step 6: Final answer
    x = 49,676.65

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1.5x scale

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.