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Finding the Fourth Proportional to 67,599.88, 101,413.32 and 20,851

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Solution

The fourth proportional to 67,599.88, 101,413.32 and 20,851 is: 31,280.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,599.88 : 101,413.32 = 20,851 : x
  2. Step 2: Convert to fraction form
    67,599.88/101,413.32 = 20,851/x
  3. Step 3: Cross multiply
    67,599.88x = 101,413.32 × 20,851
  4. Step 4: Simplify right side
    67,599.88x = 2,114,569,135.32
  5. Step 5: Solve for x
    x = 2,114,569,135.32/67,599.88
  6. Step 6: Final answer
    x = 31,280.66

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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.