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Finding the Fourth Proportional to 62,641.50, 86,490.63 and 40,324.38

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Solution

The fourth proportional to 62,641.50, 86,490.63 and 40,324.38 is: 55,676.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,641.50 : 86,490.63 = 40,324.38 : x
  2. Step 2: Convert to fraction form
    62,641.50/86,490.63 = 40,324.38/x
  3. Step 3: Cross multiply
    62,641.50x = 86,490.63 × 40,324.38
  4. Step 4: Simplify right side
    62,641.50x = 3,487,681,030.56
  5. Step 5: Solve for x
    x = 3,487,681,030.56/62,641.50
  6. Step 6: Final answer
    x = 55,676.84

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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.