Home / 78,039.36-117,014.33-23,989.97

Finding the Fourth Proportional to 78,039.36, 117,014.33 and 23,989.97

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Solution

The fourth proportional to 78,039.36, 117,014.33 and 23,989.97 is: 35,971.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,039.36 : 117,014.33 = 23,989.97 : x
  2. Step 2: Convert to fraction form
    78,039.36/117,014.33 = 23,989.97/x
  3. Step 3: Cross multiply
    78,039.36x = 117,014.33 × 23,989.97
  4. Step 4: Simplify right side
    78,039.36x = 2,807,170,652.52
  5. Step 5: Solve for x
    x = 2,807,170,652.52/78,039.36
  6. Step 6: Final answer
    x = 35,971.22

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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.