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Finding the Fourth Proportional to 66,523.75, 91,802.90 and 36,715.75

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Solution

The fourth proportional to 66,523.75, 91,802.90 and 36,715.75 is: 50,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,523.75 : 91,802.90 = 36,715.75 : x
  2. Step 2: Convert to fraction form
    66,523.75/91,802.90 = 36,715.75/x
  3. Step 3: Cross multiply
    66,523.75x = 91,802.90 × 36,715.75
  4. Step 4: Simplify right side
    66,523.75x = 3,370,612,325.68
  5. Step 5: Solve for x
    x = 3,370,612,325.68/66,523.75
  6. Step 6: Final answer
    x = 50,667.80

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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.