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Finding the Fourth Proportional to 103,395.25, 155,092.29 and 40,259.29

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Solution

The fourth proportional to 103,395.25, 155,092.29 and 40,259.29 is: 60,388.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,395.25 : 155,092.29 = 40,259.29 : x
  2. Step 2: Convert to fraction form
    103,395.25/155,092.29 = 40,259.29/x
  3. Step 3: Cross multiply
    103,395.25x = 155,092.29 × 40,259.29
  4. Step 4: Simplify right side
    103,395.25x = 6,243,905,479.87
  5. Step 5: Solve for x
    x = 6,243,905,479.87/103,395.25
  6. Step 6: Final answer
    x = 60,388.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.