Home / 78,431.66-117,647.31-22,271.84

Finding the Fourth Proportional to 78,431.66, 117,647.31 and 22,271.84

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Solution

The fourth proportional to 78,431.66, 117,647.31 and 22,271.84 is: 33,407.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,431.66 : 117,647.31 = 22,271.84 : x
  2. Step 2: Convert to fraction form
    78,431.66/117,647.31 = 22,271.84/x
  3. Step 3: Cross multiply
    78,431.66x = 117,647.31 × 22,271.84
  4. Step 4: Simplify right side
    78,431.66x = 2,620,222,064.75
  5. Step 5: Solve for x
    x = 2,620,222,064.75/78,431.66
  6. Step 6: Final answer
    x = 33,407.71

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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.