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Finding the Fourth Proportional to 72,119.42, 99,518.09 and 41,904.42

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Solution

The fourth proportional to 72,119.42, 99,518.09 and 41,904.42 is: 57,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,119.42 : 99,518.09 = 41,904.42 : x
  2. Step 2: Convert to fraction form
    72,119.42/99,518.09 = 41,904.42/x
  3. Step 3: Cross multiply
    72,119.42x = 99,518.09 × 41,904.42
  4. Step 4: Simplify right side
    72,119.42x = 4,170,247,631.44
  5. Step 5: Solve for x
    x = 4,170,247,631.44/72,119.42
  6. Step 6: Final answer
    x = 57,824.20

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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.