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Finding the Fourth Proportional to 66,372.60, 91,593.72 and 36,157.80

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Solution

The fourth proportional to 66,372.60, 91,593.72 and 36,157.80 is: 49,897.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,372.60 : 91,593.72 = 36,157.80 : x
  2. Step 2: Convert to fraction form
    66,372.60/91,593.72 = 36,157.80/x
  3. Step 3: Cross multiply
    66,372.60x = 91,593.72 × 36,157.80
  4. Step 4: Simplify right side
    66,372.60x = 3,311,827,409.02
  5. Step 5: Solve for x
    x = 3,311,827,409.02/66,372.60
  6. Step 6: Final answer
    x = 49,897.51

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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.