Home / 80,961.53-121,413.12-34,218.05

Finding the Fourth Proportional to 80,961.53, 121,413.12 and 34,218.05

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Solution

The fourth proportional to 80,961.53, 121,413.12 and 34,218.05 is: 51,314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,961.53 : 121,413.12 = 34,218.05 : x
  2. Step 2: Convert to fraction form
    80,961.53/121,413.12 = 34,218.05/x
  3. Step 3: Cross multiply
    80,961.53x = 121,413.12 × 34,218.05
  4. Step 4: Simplify right side
    80,961.53x = 4,154,519,603.75
  5. Step 5: Solve for x
    x = 4,154,519,603.75/80,961.53
  6. Step 6: Final answer
    x = 51,314.74

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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.