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Finding the Fourth Proportional to 57,997.20, 86,995.80 and 56,701.20

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Solution

The fourth proportional to 57,997.20, 86,995.80 and 56,701.20 is: 85,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,997.20 : 86,995.80 = 56,701.20 : x
  2. Step 2: Convert to fraction form
    57,997.20/86,995.80 = 56,701.20/x
  3. Step 3: Cross multiply
    57,997.20x = 86,995.80 × 56,701.20
  4. Step 4: Simplify right side
    57,997.20x = 4,932,766,254.96
  5. Step 5: Solve for x
    x = 4,932,766,254.96/57,997.20
  6. Step 6: Final answer
    x = 85,051.80

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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.