Home / 40,728.54-61,102.37-12,647.14

Finding the Fourth Proportional to 40,728.54, 61,102.37 and 12,647.14

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Solution

The fourth proportional to 40,728.54, 61,102.37 and 12,647.14 is: 18,973.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.54 : 61,102.37 = 12,647.14 : x
  2. Step 2: Convert to fraction form
    40,728.54/61,102.37 = 12,647.14/x
  3. Step 3: Cross multiply
    40,728.54x = 61,102.37 × 12,647.14
  4. Step 4: Simplify right side
    40,728.54x = 772,770,227.72
  5. Step 5: Solve for x
    x = 772,770,227.72/40,728.54
  6. Step 6: Final answer
    x = 18,973.68

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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.