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Finding the Fourth Proportional to 91,975, 137,847.08 and 39,322.60

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Solution

The fourth proportional to 91,975, 137,847.08 and 39,322.60 is: 58,934.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,975 : 137,847.08 = 39,322.60 : x
  2. Step 2: Convert to fraction form
    91,975/137,847.08 = 39,322.60/x
  3. Step 3: Cross multiply
    91,975x = 137,847.08 × 39,322.60
  4. Step 4: Simplify right side
    91,975x = 5,420,505,588.01
  5. Step 5: Solve for x
    x = 5,420,505,588.01/91,975
  6. Step 6: Final answer
    x = 58,934.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.