Home / 55,279.76-76,286.04-30,129.28

Finding the Fourth Proportional to 55,279.76, 76,286.04 and 30,129.28

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Solution

The fourth proportional to 55,279.76, 76,286.04 and 30,129.28 is: 41,578.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,279.76 : 76,286.04 = 30,129.28 : x
  2. Step 2: Convert to fraction form
    55,279.76/76,286.04 = 30,129.28/x
  3. Step 3: Cross multiply
    55,279.76x = 76,286.04 × 30,129.28
  4. Step 4: Simplify right side
    55,279.76x = 2,298,443,459.25
  5. Step 5: Solve for x
    x = 2,298,443,459.25/55,279.76
  6. Step 6: Final answer
    x = 41,578.39

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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.