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Finding the Fourth Proportional to 69,312.78, 103,896.80 and 50,291.46

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Solution

The fourth proportional to 69,312.78, 103,896.80 and 50,291.46 is: 75,384.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,312.78 : 103,896.80 = 50,291.46 : x
  2. Step 2: Convert to fraction form
    69,312.78/103,896.80 = 50,291.46/x
  3. Step 3: Cross multiply
    69,312.78x = 103,896.80 × 50,291.46
  4. Step 4: Simplify right side
    69,312.78x = 5,225,121,367.57
  5. Step 5: Solve for x
    x = 5,225,121,367.57/69,312.78
  6. Step 6: Final answer
    x = 75,384.68

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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.