Home / 81,401.40-122,102.10-54,829.35

Finding the Fourth Proportional to 81,401.40, 122,102.10 and 54,829.35

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Solution

The fourth proportional to 81,401.40, 122,102.10 and 54,829.35 is: 82,244.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,401.40 : 122,102.10 = 54,829.35 : x
  2. Step 2: Convert to fraction form
    81,401.40/122,102.10 = 54,829.35/x
  3. Step 3: Cross multiply
    81,401.40x = 122,102.10 × 54,829.35
  4. Step 4: Simplify right side
    81,401.40x = 6,694,778,776.64
  5. Step 5: Solve for x
    x = 6,694,778,776.64/81,401.40
  6. Step 6: Final answer
    x = 82,244.03

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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.