Home / 81,401.40-122,102.10-45,826.20

Finding the Fourth Proportional to 81,401.40, 122,102.10 and 45,826.20

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Solution

The fourth proportional to 81,401.40, 122,102.10 and 45,826.20 is: 68,739.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,401.40 : 122,102.10 = 45,826.20 : x
  2. Step 2: Convert to fraction form
    81,401.40/122,102.10 = 45,826.20/x
  3. Step 3: Cross multiply
    81,401.40x = 122,102.10 × 45,826.20
  4. Step 4: Simplify right side
    81,401.40x = 5,595,475,255.02
  5. Step 5: Solve for x
    x = 5,595,475,255.02/81,401.40
  6. Step 6: Final answer
    x = 68,739.30

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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.