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Finding the Fourth Proportional to 66,130, 91,265.52 and 36,327.76

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Solution

The fourth proportional to 66,130, 91,265.52 and 36,327.76 is: 50,135.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,130 : 91,265.52 = 36,327.76 : x
  2. Step 2: Convert to fraction form
    66,130/91,265.52 = 36,327.76/x
  3. Step 3: Cross multiply
    66,130x = 91,265.52 × 36,327.76
  4. Step 4: Simplify right side
    66,130x = 3,315,471,906.84
  5. Step 5: Solve for x
    x = 3,315,471,906.84/66,130
  6. Step 6: Final answer
    x = 50,135.67

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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.