Home / 55,279.85-76,286.48-31,407.84

Finding the Fourth Proportional to 55,279.85, 76,286.48 and 31,407.84

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Solution

The fourth proportional to 55,279.85, 76,286.48 and 31,407.84 is: 43,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,279.85 : 76,286.48 = 31,407.84 : x
  2. Step 2: Convert to fraction form
    55,279.85/76,286.48 = 31,407.84/x
  3. Step 3: Cross multiply
    55,279.85x = 76,286.48 × 31,407.84
  4. Step 4: Simplify right side
    55,279.85x = 2,395,993,400.96
  5. Step 5: Solve for x
    x = 2,395,993,400.96/55,279.85
  6. Step 6: Final answer
    x = 43,342.98

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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.