Home / 68,401.85-102,638.30-51,756.93

Finding the Fourth Proportional to 68,401.85, 102,638.30 and 51,756.93

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Solution

The fourth proportional to 68,401.85, 102,638.30 and 51,756.93 is: 77,662.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,401.85 : 102,638.30 = 51,756.93 : x
  2. Step 2: Convert to fraction form
    68,401.85/102,638.30 = 51,756.93/x
  3. Step 3: Cross multiply
    68,401.85x = 102,638.30 × 51,756.93
  4. Step 4: Simplify right side
    68,401.85x = 5,312,243,049.63
  5. Step 5: Solve for x
    x = 5,312,243,049.63/68,401.85
  6. Step 6: Final answer
    x = 77,662.28

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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.