Home / 40,729.04-61,103.12-12,647.64

Finding the Fourth Proportional to 40,729.04, 61,103.12 and 12,647.64

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Solution

The fourth proportional to 40,729.04, 61,103.12 and 12,647.64 is: 18,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,729.04 : 61,103.12 = 12,647.64 : x
  2. Step 2: Convert to fraction form
    40,729.04/61,103.12 = 12,647.64/x
  3. Step 3: Cross multiply
    40,729.04x = 61,103.12 × 12,647.64
  4. Step 4: Simplify right side
    40,729.04x = 772,810,201.40
  5. Step 5: Solve for x
    x = 772,810,201.40/40,729.04
  6. Step 6: Final answer
    x = 18,974.43

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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.