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Finding the Fourth Proportional to 55,893.20, 83,837.40 and 18,957.20

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Solution

The fourth proportional to 55,893.20, 83,837.40 and 18,957.20 is: 28,434.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,893.20 : 83,837.40 = 18,957.20 : x
  2. Step 2: Convert to fraction form
    55,893.20/83,837.40 = 18,957.20/x
  3. Step 3: Cross multiply
    55,893.20x = 83,837.40 × 18,957.20
  4. Step 4: Simplify right side
    55,893.20x = 1,589,322,359.28
  5. Step 5: Solve for x
    x = 1,589,322,359.28/55,893.20
  6. Step 6: Final answer
    x = 28,434.99

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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.