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Finding the Fourth Proportional to 103,599.36, 155,294.46 and 40,379.94

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Solution

The fourth proportional to 103,599.36, 155,294.46 and 40,379.94 is: 60,529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,599.36 : 155,294.46 = 40,379.94 : x
  2. Step 2: Convert to fraction form
    103,599.36/155,294.46 = 40,379.94/x
  3. Step 3: Cross multiply
    103,599.36x = 155,294.46 × 40,379.94
  4. Step 4: Simplify right side
    103,599.36x = 6,270,780,977.13
  5. Step 5: Solve for x
    x = 6,270,780,977.13/103,599.36
  6. Step 6: Final answer
    x = 60,529.15

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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.