Home / 78,413.24-117,619.86-28,484.04

Finding the Fourth Proportional to 78,413.24, 117,619.86 and 28,484.04

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Solution

The fourth proportional to 78,413.24, 117,619.86 and 28,484.04 is: 42,726.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,413.24 : 117,619.86 = 28,484.04 : x
  2. Step 2: Convert to fraction form
    78,413.24/117,619.86 = 28,484.04/x
  3. Step 3: Cross multiply
    78,413.24x = 117,619.86 × 28,484.04
  4. Step 4: Simplify right side
    78,413.24x = 3,350,288,797.03
  5. Step 5: Solve for x
    x = 3,350,288,797.03/78,413.24
  6. Step 6: Final answer
    x = 42,726.06

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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.