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Finding the Fourth Proportional to 55,997.72, 83,986.86 and 19,061.72

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Solution

The fourth proportional to 55,997.72, 83,986.86 and 19,061.72 is: 28,589.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,997.72 : 83,986.86 = 19,061.72 : x
  2. Step 2: Convert to fraction form
    55,997.72/83,986.86 = 19,061.72/x
  3. Step 3: Cross multiply
    55,997.72x = 83,986.86 × 19,061.72
  4. Step 4: Simplify right side
    55,997.72x = 1,600,934,009.00
  5. Step 5: Solve for x
    x = 1,600,934,009.00/55,997.72
  6. Step 6: Final answer
    x = 28,589.27

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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.