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Finding the Fourth Proportional to 72,188.97, 108,210.77 and 30,092.36

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Solution

The fourth proportional to 72,188.97, 108,210.77 and 30,092.36 is: 45,108.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,188.97 : 108,210.77 = 30,092.36 : x
  2. Step 2: Convert to fraction form
    72,188.97/108,210.77 = 30,092.36/x
  3. Step 3: Cross multiply
    72,188.97x = 108,210.77 × 30,092.36
  4. Step 4: Simplify right side
    72,188.97x = 3,256,317,679.63
  5. Step 5: Solve for x
    x = 3,256,317,679.63/72,188.97
  6. Step 6: Final answer
    x = 45,108.24

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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.