Home / 55,081.64-76,012.47-31,212.86

Finding the Fourth Proportional to 55,081.64, 76,012.47 and 31,212.86

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Solution

The fourth proportional to 55,081.64, 76,012.47 and 31,212.86 is: 43,073.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,081.64 : 76,012.47 = 31,212.86 : x
  2. Step 2: Convert to fraction form
    55,081.64/76,012.47 = 31,212.86/x
  3. Step 3: Cross multiply
    55,081.64x = 76,012.47 × 31,212.86
  4. Step 4: Simplify right side
    55,081.64x = 2,372,566,204.30
  5. Step 5: Solve for x
    x = 2,372,566,204.30/55,081.64
  6. Step 6: Final answer
    x = 43,073.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.