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Finding the Fourth Proportional to 74,102.50, 102,263.07 and 40,568.50

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Solution

The fourth proportional to 74,102.50, 102,263.07 and 40,568.50 is: 55,985.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,102.50 : 102,263.07 = 40,568.50 : x
  2. Step 2: Convert to fraction form
    74,102.50/102,263.07 = 40,568.50/x
  3. Step 3: Cross multiply
    74,102.50x = 102,263.07 × 40,568.50
  4. Step 4: Simplify right side
    74,102.50x = 4,148,659,355.30
  5. Step 5: Solve for x
    x = 4,148,659,355.30/74,102.50
  6. Step 6: Final answer
    x = 55,985.42

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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.