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Finding the Fourth Proportional to 66,652.61, 91,980.77 and 36,438.26

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Solution

The fourth proportional to 66,652.61, 91,980.77 and 36,438.26 is: 50,284.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,652.61 : 91,980.77 = 36,438.26 : x
  2. Step 2: Convert to fraction form
    66,652.61/91,980.77 = 36,438.26/x
  3. Step 3: Cross multiply
    66,652.61x = 91,980.77 × 36,438.26
  4. Step 4: Simplify right side
    66,652.61x = 3,351,618,570.17
  5. Step 5: Solve for x
    x = 3,351,618,570.17/66,652.61
  6. Step 6: Final answer
    x = 50,284.88

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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.