Home / 45,413.28-68,102.64-20,772

Finding the Fourth Proportional to 45,413.28, 68,102.64 and 20,772

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Solution

The fourth proportional to 45,413.28, 68,102.64 and 20,772 is: 31,150.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,413.28 : 68,102.64 = 20,772 : x
  2. Step 2: Convert to fraction form
    45,413.28/68,102.64 = 20,772/x
  3. Step 3: Cross multiply
    45,413.28x = 68,102.64 × 20,772
  4. Step 4: Simplify right side
    45,413.28x = 1,414,628,038.08
  5. Step 5: Solve for x
    x = 1,414,628,038.08/45,413.28
  6. Step 6: Final answer
    x = 31,150.10

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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.