Home / 56,107.56-84,142.96-18,657.31

Finding the Fourth Proportional to 56,107.56, 84,142.96 and 18,657.31

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Solution

The fourth proportional to 56,107.56, 84,142.96 and 18,657.31 is: 27,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,107.56 : 84,142.96 = 18,657.31 : x
  2. Step 2: Convert to fraction form
    56,107.56/84,142.96 = 18,657.31/x
  3. Step 3: Cross multiply
    56,107.56x = 84,142.96 × 18,657.31
  4. Step 4: Simplify right side
    56,107.56x = 1,569,881,289.04
  5. Step 5: Solve for x
    x = 1,569,881,289.04/56,107.56
  6. Step 6: Final answer
    x = 27,979.85

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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.