Home / 55,279.89-76,286.07-30,129.39

Finding the Fourth Proportional to 55,279.89, 76,286.07 and 30,129.39

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Solution

The fourth proportional to 55,279.89, 76,286.07 and 30,129.39 is: 41,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,279.89 : 76,286.07 = 30,129.39 : x
  2. Step 2: Convert to fraction form
    55,279.89/76,286.07 = 30,129.39/x
  3. Step 3: Cross multiply
    55,279.89x = 76,286.07 × 30,129.39
  4. Step 4: Simplify right side
    55,279.89x = 2,298,452,754.60
  5. Step 5: Solve for x
    x = 2,298,452,754.60/55,279.89
  6. Step 6: Final answer
    x = 41,578.46

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1.5x scale

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.