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Finding the Fourth Proportional to 66,212.76, 91,373.60 and 36,404.76

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Solution

The fourth proportional to 66,212.76, 91,373.60 and 36,404.76 is: 50,238.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,212.76 : 91,373.60 = 36,404.76 : x
  2. Step 2: Convert to fraction form
    66,212.76/91,373.60 = 36,404.76/x
  3. Step 3: Cross multiply
    66,212.76x = 91,373.60 × 36,404.76
  4. Step 4: Simplify right side
    66,212.76x = 3,326,433,978.34
  5. Step 5: Solve for x
    x = 3,326,433,978.34/66,212.76
  6. Step 6: Final answer
    x = 50,238.56

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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.