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Finding the Fourth Proportional to 73,776.89, 101,812.43 and 40,243.61

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Solution

The fourth proportional to 73,776.89, 101,812.43 and 40,243.61 is: 55,536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,776.89 : 101,812.43 = 40,243.61 : x
  2. Step 2: Convert to fraction form
    73,776.89/101,812.43 = 40,243.61/x
  3. Step 3: Cross multiply
    73,776.89x = 101,812.43 × 40,243.61
  4. Step 4: Simplify right side
    73,776.89x = 4,097,299,726.07
  5. Step 5: Solve for x
    x = 4,097,299,726.07/73,776.89
  6. Step 6: Final answer
    x = 55,536.36

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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.