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Finding the Fourth Proportional to 36,508.78, 50,390.40 and 30,530.08

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Solution

The fourth proportional to 36,508.78, 50,390.40 and 30,530.08 is: 42,138.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,508.78 : 50,390.40 = 30,530.08 : x
  2. Step 2: Convert to fraction form
    36,508.78/50,390.40 = 30,530.08/x
  3. Step 3: Cross multiply
    36,508.78x = 50,390.40 × 30,530.08
  4. Step 4: Simplify right side
    36,508.78x = 1,538,422,943.23
  5. Step 5: Solve for x
    x = 1,538,422,943.23/36,508.78
  6. Step 6: Final answer
    x = 42,138.44

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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.