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Finding the Fourth Proportional to 103,659.94, 155,448.06 and 40,471.03

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Solution

The fourth proportional to 103,659.94, 155,448.06 and 40,471.03 is: 60,690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,659.94 : 155,448.06 = 40,471.03 : x
  2. Step 2: Convert to fraction form
    103,659.94/155,448.06 = 40,471.03/x
  3. Step 3: Cross multiply
    103,659.94x = 155,448.06 × 40,471.03
  4. Step 4: Simplify right side
    103,659.94x = 6,291,143,099.70
  5. Step 5: Solve for x
    x = 6,291,143,099.70/103,659.94
  6. Step 6: Final answer
    x = 60,690.21

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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.