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Finding the Fourth Proportional to 72,937.36, 100,659.12 and 41,109.28

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Solution

The fourth proportional to 72,937.36, 100,659.12 and 41,109.28 is: 56,733.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,937.36 : 100,659.12 = 41,109.28 : x
  2. Step 2: Convert to fraction form
    72,937.36/100,659.12 = 41,109.28/x
  3. Step 3: Cross multiply
    72,937.36x = 100,659.12 × 41,109.28
  4. Step 4: Simplify right side
    72,937.36x = 4,138,023,948.63
  5. Step 5: Solve for x
    x = 4,138,023,948.63/72,937.36
  6. Step 6: Final answer
    x = 56,733.94

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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.