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Finding the Fourth Proportional to 66,420.58, 91,659.22 and 36,206.17

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Solution

The fourth proportional to 66,420.58, 91,659.22 and 36,206.17 is: 49,963.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.58 : 91,659.22 = 36,206.17 : x
  2. Step 2: Convert to fraction form
    66,420.58/91,659.22 = 36,206.17/x
  3. Step 3: Cross multiply
    66,420.58x = 91,659.22 × 36,206.17
  4. Step 4: Simplify right side
    66,420.58x = 3,318,629,301.39
  5. Step 5: Solve for x
    x = 3,318,629,301.39/66,420.58
  6. Step 6: Final answer
    x = 49,963.87

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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.