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Finding the Fourth Proportional to 72,936.47, 100,650.29 and 40,672.02

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Solution

The fourth proportional to 72,936.47, 100,650.29 and 40,672.02 is: 56,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,936.47 : 100,650.29 = 40,672.02 : x
  2. Step 2: Convert to fraction form
    72,936.47/100,650.29 = 40,672.02/x
  3. Step 3: Cross multiply
    72,936.47x = 100,650.29 × 40,672.02
  4. Step 4: Simplify right side
    72,936.47x = 4,093,650,273.24
  5. Step 5: Solve for x
    x = 4,093,650,273.24/72,936.47
  6. Step 6: Final answer
    x = 56,126.25

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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.