Home / 80,336.40-120,634.20-60,637.20

Finding the Fourth Proportional to 80,336.40, 120,634.20 and 60,637.20

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Solution

The fourth proportional to 80,336.40, 120,634.20 and 60,637.20 is: 91,053.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,336.40 : 120,634.20 = 60,637.20 : x
  2. Step 2: Convert to fraction form
    80,336.40/120,634.20 = 60,637.20/x
  3. Step 3: Cross multiply
    80,336.40x = 120,634.20 × 60,637.20
  4. Step 4: Simplify right side
    80,336.40x = 7,314,920,112.24
  5. Step 5: Solve for x
    x = 7,314,920,112.24/80,336.40
  6. Step 6: Final answer
    x = 91,053.62

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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.