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Finding the Fourth Proportional to 72,899.64, 100,600.38 and 41,071.56

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Solution

The fourth proportional to 72,899.64, 100,600.38 and 41,071.56 is: 56,678.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,899.64 : 100,600.38 = 41,071.56 : x
  2. Step 2: Convert to fraction form
    72,899.64/100,600.38 = 41,071.56/x
  3. Step 3: Cross multiply
    72,899.64x = 100,600.38 × 41,071.56
  4. Step 4: Simplify right side
    72,899.64x = 4,131,814,543.19
  5. Step 5: Solve for x
    x = 4,131,814,543.19/72,899.64
  6. Step 6: Final answer
    x = 56,678.12

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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.