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Finding the Fourth Proportional to 68,951.52, 103,423.50 and 19,031.94

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Solution

The fourth proportional to 68,951.52, 103,423.50 and 19,031.94 is: 28,546.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,951.52 : 103,423.50 = 19,031.94 : x
  2. Step 2: Convert to fraction form
    68,951.52/103,423.50 = 19,031.94/x
  3. Step 3: Cross multiply
    68,951.52x = 103,423.50 × 19,031.94
  4. Step 4: Simplify right side
    68,951.52x = 1,968,349,846.59
  5. Step 5: Solve for x
    x = 1,968,349,846.59/68,951.52
  6. Step 6: Final answer
    x = 28,546.87

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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.