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Finding the Fourth Proportional to 80,604.69, 111,283.07 and 53,403.81

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Solution

The fourth proportional to 80,604.69, 111,283.07 and 53,403.81 is: 73,729.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,604.69 : 111,283.07 = 53,403.81 : x
  2. Step 2: Convert to fraction form
    80,604.69/111,283.07 = 53,403.81/x
  3. Step 3: Cross multiply
    80,604.69x = 111,283.07 × 53,403.81
  4. Step 4: Simplify right side
    80,604.69x = 5,942,939,242.17
  5. Step 5: Solve for x
    x = 5,942,939,242.17/80,604.69
  6. Step 6: Final answer
    x = 73,729.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.