Home / 81,002.22-121,504.41-28,413.24

Finding the Fourth Proportional to 81,002.22, 121,504.41 and 28,413.24

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Solution

The fourth proportional to 81,002.22, 121,504.41 and 28,413.24 is: 42,620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,002.22 : 121,504.41 = 28,413.24 : x
  2. Step 2: Convert to fraction form
    81,002.22/121,504.41 = 28,413.24/x
  3. Step 3: Cross multiply
    81,002.22x = 121,504.41 × 28,413.24
  4. Step 4: Simplify right side
    81,002.22x = 3,452,333,962.39
  5. Step 5: Solve for x
    x = 3,452,333,962.39/81,002.22
  6. Step 6: Final answer
    x = 42,620.24

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1.5x scale

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.