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Finding the Fourth Proportional to 73,869.50, 101,940.46 and 40,335.50

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Solution

The fourth proportional to 73,869.50, 101,940.46 and 40,335.50 is: 55,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,869.50 : 101,940.46 = 40,335.50 : x
  2. Step 2: Convert to fraction form
    73,869.50/101,940.46 = 40,335.50/x
  3. Step 3: Cross multiply
    73,869.50x = 101,940.46 × 40,335.50
  4. Step 4: Simplify right side
    73,869.50x = 4,111,819,424.33
  5. Step 5: Solve for x
    x = 4,111,819,424.33/73,869.50
  6. Step 6: Final answer
    x = 55,663.29

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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.