Home / 68,020.77-102,031.41-20,636.28

Finding the Fourth Proportional to 68,020.77, 102,031.41 and 20,636.28

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Solution

The fourth proportional to 68,020.77, 102,031.41 and 20,636.28 is: 30,954.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,020.77 : 102,031.41 = 20,636.28 : x
  2. Step 2: Convert to fraction form
    68,020.77/102,031.41 = 20,636.28/x
  3. Step 3: Cross multiply
    68,020.77x = 102,031.41 × 20,636.28
  4. Step 4: Simplify right side
    68,020.77x = 2,105,548,745.55
  5. Step 5: Solve for x
    x = 2,105,548,745.55/68,020.77
  6. Step 6: Final answer
    x = 30,954.50

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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.