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Finding the Fourth Proportional to 72,924.94, 100,635.82 and 40,659.18

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Solution

The fourth proportional to 72,924.94, 100,635.82 and 40,659.18 is: 56,109.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,924.94 : 100,635.82 = 40,659.18 : x
  2. Step 2: Convert to fraction form
    72,924.94/100,635.82 = 40,659.18/x
  3. Step 3: Cross multiply
    72,924.94x = 100,635.82 × 40,659.18
  4. Step 4: Simplify right side
    72,924.94x = 4,091,769,669.50
  5. Step 5: Solve for x
    x = 4,091,769,669.50/72,924.94
  6. Step 6: Final answer
    x = 56,109.33

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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.