Home / 56,105.56-84,139.97-18,655.31

Finding the Fourth Proportional to 56,105.56, 84,139.97 and 18,655.31

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Solution

The fourth proportional to 56,105.56, 84,139.97 and 18,655.31 is: 27,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,105.56 : 84,139.97 = 18,655.31 : x
  2. Step 2: Convert to fraction form
    56,105.56/84,139.97 = 18,655.31/x
  3. Step 3: Cross multiply
    56,105.56x = 84,139.97 × 18,655.31
  4. Step 4: Simplify right side
    56,105.56x = 1,569,657,340.81
  5. Step 5: Solve for x
    x = 1,569,657,340.81/56,105.56
  6. Step 6: Final answer
    x = 27,976.86

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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.