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Finding the Fourth Proportional to 73,272.78, 109,738.26 and 53,502.30

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Solution

The fourth proportional to 73,272.78, 109,738.26 and 53,502.30 is: 80,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,272.78 : 109,738.26 = 53,502.30 : x
  2. Step 2: Convert to fraction form
    73,272.78/109,738.26 = 53,502.30/x
  3. Step 3: Cross multiply
    73,272.78x = 109,738.26 × 53,502.30
  4. Step 4: Simplify right side
    73,272.78x = 5,871,249,308.00
  5. Step 5: Solve for x
    x = 5,871,249,308.00/73,272.78
  6. Step 6: Final answer
    x = 80,128.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.