Home / 56,190.14-84,297.52-21,129.80

Finding the Fourth Proportional to 56,190.14, 84,297.52 and 21,129.80

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Solution

The fourth proportional to 56,190.14, 84,297.52 and 21,129.80 is: 31,699.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,190.14 : 84,297.52 = 21,129.80 : x
  2. Step 2: Convert to fraction form
    56,190.14/84,297.52 = 21,129.80/x
  3. Step 3: Cross multiply
    56,190.14x = 84,297.52 × 21,129.80
  4. Step 4: Simplify right side
    56,190.14x = 1,781,189,738.10
  5. Step 5: Solve for x
    x = 1,781,189,738.10/56,190.14
  6. Step 6: Final answer
    x = 31,699.33

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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.