Home / 90,413.55-124,778.10-50,139.95

Finding the Fourth Proportional to 90,413.55, 124,778.10 and 50,139.95

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Solution

The fourth proportional to 90,413.55, 124,778.10 and 50,139.95 is: 69,197.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,413.55 : 124,778.10 = 50,139.95 : x
  2. Step 2: Convert to fraction form
    90,413.55/124,778.10 = 50,139.95/x
  3. Step 3: Cross multiply
    90,413.55x = 124,778.10 × 50,139.95
  4. Step 4: Simplify right side
    90,413.55x = 6,256,367,695.10
  5. Step 5: Solve for x
    x = 6,256,367,695.10/90,413.55
  6. Step 6: Final answer
    x = 69,197.24

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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.