Home / 87,413.81-120,650.15-55,576.49

Finding the Fourth Proportional to 87,413.81, 120,650.15 and 55,576.49

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Solution

The fourth proportional to 87,413.81, 120,650.15 and 55,576.49 is: 76,707.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,413.81 : 120,650.15 = 55,576.49 : x
  2. Step 2: Convert to fraction form
    87,413.81/120,650.15 = 55,576.49/x
  3. Step 3: Cross multiply
    87,413.81x = 120,650.15 × 55,576.49
  4. Step 4: Simplify right side
    87,413.81x = 6,705,311,390.66
  5. Step 5: Solve for x
    x = 6,705,311,390.66/87,413.81
  6. Step 6: Final answer
    x = 76,707.69

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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.