Home / 80,631.45-120,848.76-45,498.51

Finding the Fourth Proportional to 80,631.45, 120,848.76 and 45,498.51

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Solution

The fourth proportional to 80,631.45, 120,848.76 and 45,498.51 is: 68,192.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,631.45 : 120,848.76 = 45,498.51 : x
  2. Step 2: Convert to fraction form
    80,631.45/120,848.76 = 45,498.51/x
  3. Step 3: Cross multiply
    80,631.45x = 120,848.76 × 45,498.51
  4. Step 4: Simplify right side
    80,631.45x = 5,498,438,515.35
  5. Step 5: Solve for x
    x = 5,498,438,515.35/80,631.45
  6. Step 6: Final answer
    x = 68,192.23

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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.