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Finding the Fourth Proportional to 72,798.43, 100,463.86 and 40,968.47

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Solution

The fourth proportional to 72,798.43, 100,463.86 and 40,968.47 is: 56,537.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,798.43 : 100,463.86 = 40,968.47 : x
  2. Step 2: Convert to fraction form
    72,798.43/100,463.86 = 40,968.47/x
  3. Step 3: Cross multiply
    72,798.43x = 100,463.86 × 40,968.47
  4. Step 4: Simplify right side
    72,798.43x = 4,115,850,634.49
  5. Step 5: Solve for x
    x = 4,115,850,634.49/72,798.43
  6. Step 6: Final answer
    x = 56,537.63

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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.