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Finding the Fourth Proportional to 57,259.44, 85,894.92 and 21,245.76

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Solution

The fourth proportional to 57,259.44, 85,894.92 and 21,245.76 is: 31,870.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,259.44 : 85,894.92 = 21,245.76 : x
  2. Step 2: Convert to fraction form
    57,259.44/85,894.92 = 21,245.76/x
  3. Step 3: Cross multiply
    57,259.44x = 85,894.92 × 21,245.76
  4. Step 4: Simplify right side
    57,259.44x = 1,824,902,855.54
  5. Step 5: Solve for x
    x = 1,824,902,855.54/57,259.44
  6. Step 6: Final answer
    x = 31,870.78

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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.