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Finding the Fourth Proportional to 57,245.20, 85,867.80 and 50,902.90

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Solution

The fourth proportional to 57,245.20, 85,867.80 and 50,902.90 is: 76,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,245.20 : 85,867.80 = 50,902.90 : x
  2. Step 2: Convert to fraction form
    57,245.20/85,867.80 = 50,902.90/x
  3. Step 3: Cross multiply
    57,245.20x = 85,867.80 × 50,902.90
  4. Step 4: Simplify right side
    57,245.20x = 4,370,920,036.62
  5. Step 5: Solve for x
    x = 4,370,920,036.62/57,245.20
  6. Step 6: Final answer
    x = 76,354.35

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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.