Home / 78,040.36-117,015.83-23,990.97

Finding the Fourth Proportional to 78,040.36, 117,015.83 and 23,990.97

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Solution

The fourth proportional to 78,040.36, 117,015.83 and 23,990.97 is: 35,972.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,040.36 : 117,015.83 = 23,990.97 : x
  2. Step 2: Convert to fraction form
    78,040.36/117,015.83 = 23,990.97/x
  3. Step 3: Cross multiply
    78,040.36x = 117,015.83 × 23,990.97
  4. Step 4: Simplify right side
    78,040.36x = 2,807,323,267.06
  5. Step 5: Solve for x
    x = 2,807,323,267.06/78,040.36
  6. Step 6: Final answer
    x = 35,972.71

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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.