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Finding the Fourth Proportional to 55,569.48, 83,345.70 and 18,129.48

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Solution

The fourth proportional to 55,569.48, 83,345.70 and 18,129.48 is: 27,191.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,569.48 : 83,345.70 = 18,129.48 : x
  2. Step 2: Convert to fraction form
    55,569.48/83,345.70 = 18,129.48/x
  3. Step 3: Cross multiply
    55,569.48x = 83,345.70 × 18,129.48
  4. Step 4: Simplify right side
    55,569.48x = 1,511,014,201.24
  5. Step 5: Solve for x
    x = 1,511,014,201.24/55,569.48
  6. Step 6: Final answer
    x = 27,191.44

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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.