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Finding the Fourth Proportional to 66,223.79, 91,388.94 and 36,009.09

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Solution

The fourth proportional to 66,223.79, 91,388.94 and 36,009.09 is: 49,692.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,223.79 : 91,388.94 = 36,009.09 : x
  2. Step 2: Convert to fraction form
    66,223.79/91,388.94 = 36,009.09/x
  3. Step 3: Cross multiply
    66,223.79x = 91,388.94 × 36,009.09
  4. Step 4: Simplify right side
    66,223.79x = 3,290,831,928.47
  5. Step 5: Solve for x
    x = 3,290,831,928.47/66,223.79
  6. Step 6: Final answer
    x = 49,692.59

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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.