Home / 78,413.02-117,504.70-38,891.22

Finding the Fourth Proportional to 78,413.02, 117,504.70 and 38,891.22

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Solution

The fourth proportional to 78,413.02, 117,504.70 and 38,891.22 is: 58,279.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,413.02 : 117,504.70 = 38,891.22 : x
  2. Step 2: Convert to fraction form
    78,413.02/117,504.70 = 38,891.22/x
  3. Step 3: Cross multiply
    78,413.02x = 117,504.70 × 38,891.22
  4. Step 4: Simplify right side
    78,413.02x = 4,569,901,138.73
  5. Step 5: Solve for x
    x = 4,569,901,138.73/78,413.02
  6. Step 6: Final answer
    x = 58,279.88

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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.