Home / 80,989.13-121,502.84-36,615.80

Finding the Fourth Proportional to 80,989.13, 121,502.84 and 36,615.80

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Solution

The fourth proportional to 80,989.13, 121,502.84 and 36,615.80 is: 54,932.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,989.13 : 121,502.84 = 36,615.80 : x
  2. Step 2: Convert to fraction form
    80,989.13/121,502.84 = 36,615.80/x
  3. Step 3: Cross multiply
    80,989.13x = 121,502.84 × 36,615.80
  4. Step 4: Simplify right side
    80,989.13x = 4,448,923,809.55
  5. Step 5: Solve for x
    x = 4,448,923,809.55/80,989.13
  6. Step 6: Final answer
    x = 54,932.36

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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.