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Finding the Fourth Proportional to 91,170.50, 125,821.60 and 50,892.10

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Solution

The fourth proportional to 91,170.50, 125,821.60 and 50,892.10 is: 70,234.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,170.50 : 125,821.60 = 50,892.10 : x
  2. Step 2: Convert to fraction form
    91,170.50/125,821.60 = 50,892.10/x
  3. Step 3: Cross multiply
    91,170.50x = 125,821.60 × 50,892.10
  4. Step 4: Simplify right side
    91,170.50x = 6,403,325,449.36
  5. Step 5: Solve for x
    x = 6,403,325,449.36/91,170.50
  6. Step 6: Final answer
    x = 70,234.62

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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.