Home / 56,195.43-84,305.70-21,135.39

Finding the Fourth Proportional to 56,195.43, 84,305.70 and 21,135.39

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Solution

The fourth proportional to 56,195.43, 84,305.70 and 21,135.39 is: 31,707.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,195.43 : 84,305.70 = 21,135.39 : x
  2. Step 2: Convert to fraction form
    56,195.43/84,305.70 = 21,135.39/x
  3. Step 3: Cross multiply
    56,195.43x = 84,305.70 × 21,135.39
  4. Step 4: Simplify right side
    56,195.43x = 1,781,833,848.72
  5. Step 5: Solve for x
    x = 1,781,833,848.72/56,195.43
  6. Step 6: Final answer
    x = 31,707.81

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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.