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Finding the Fourth Proportional to 103,671, 155,413.92 and 40,476.42

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Solution

The fourth proportional to 103,671, 155,413.92 and 40,476.42 is: 60,678.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,671 : 155,413.92 = 40,476.42 : x
  2. Step 2: Convert to fraction form
    103,671/155,413.92 = 40,476.42/x
  3. Step 3: Cross multiply
    103,671x = 155,413.92 × 40,476.42
  4. Step 4: Simplify right side
    103,671x = 6,290,599,099.77
  5. Step 5: Solve for x
    x = 6,290,599,099.77/103,671
  6. Step 6: Final answer
    x = 60,678.48

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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.