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Finding the Fourth Proportional to 34,615.80, 51,923.69 and 8,320.54

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Solution

The fourth proportional to 34,615.80, 51,923.69 and 8,320.54 is: 12,480.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,615.80 : 51,923.69 = 8,320.54 : x
  2. Step 2: Convert to fraction form
    34,615.80/51,923.69 = 8,320.54/x
  3. Step 3: Cross multiply
    34,615.80x = 51,923.69 × 8,320.54
  4. Step 4: Simplify right side
    34,615.80x = 432,033,139.59
  5. Step 5: Solve for x
    x = 432,033,139.59/34,615.80
  6. Step 6: Final answer
    x = 12,480.81

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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.