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Finding the Fourth Proportional to 115,221.29, 172,831.73 and 45,051.39

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Solution

The fourth proportional to 115,221.29, 172,831.73 and 45,051.39 is: 67,577.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,221.29 : 172,831.73 = 45,051.39 : x
  2. Step 2: Convert to fraction form
    115,221.29/172,831.73 = 45,051.39/x
  3. Step 3: Cross multiply
    115,221.29x = 172,831.73 × 45,051.39
  4. Step 4: Simplify right side
    115,221.29x = 7,786,309,447.35
  5. Step 5: Solve for x
    x = 7,786,309,447.35/115,221.29
  6. Step 6: Final answer
    x = 67,577.01

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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.