Home / 80,914.23-121,396.46-72,541.53

Finding the Fourth Proportional to 80,914.23, 121,396.46 and 72,541.53

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Solution

The fourth proportional to 80,914.23, 121,396.46 and 72,541.53 is: 108,834.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,914.23 : 121,396.46 = 72,541.53 : x
  2. Step 2: Convert to fraction form
    80,914.23/121,396.46 = 72,541.53/x
  3. Step 3: Cross multiply
    80,914.23x = 121,396.46 × 72,541.53
  4. Step 4: Simplify right side
    80,914.23x = 8,806,284,582.28
  5. Step 5: Solve for x
    x = 8,806,284,582.28/80,914.23
  6. Step 6: Final answer
    x = 108,834.81

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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.