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Finding the Fourth Proportional to 53,129.54, 73,319.03 and 30,469.39

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Solution

The fourth proportional to 53,129.54, 73,319.03 and 30,469.39 is: 42,047.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,129.54 : 73,319.03 = 30,469.39 : x
  2. Step 2: Convert to fraction form
    53,129.54/73,319.03 = 30,469.39/x
  3. Step 3: Cross multiply
    53,129.54x = 73,319.03 × 30,469.39
  4. Step 4: Simplify right side
    53,129.54x = 2,233,986,119.49
  5. Step 5: Solve for x
    x = 2,233,986,119.49/53,129.54
  6. Step 6: Final answer
    x = 42,047.91

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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.