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Finding the Fourth Proportional to 66,242.25, 91,415.75 and 36,434.25

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Solution

The fourth proportional to 66,242.25, 91,415.75 and 36,434.25 is: 50,280.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,242.25 : 91,415.75 = 36,434.25 : x
  2. Step 2: Convert to fraction form
    66,242.25/91,415.75 = 36,434.25/x
  3. Step 3: Cross multiply
    66,242.25x = 91,415.75 × 36,434.25
  4. Step 4: Simplify right side
    66,242.25x = 3,330,664,107.27
  5. Step 5: Solve for x
    x = 3,330,664,107.27/66,242.25
  6. Step 6: Final answer
    x = 50,280.06

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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.