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Finding the Fourth Proportional to 103,354.26, 155,031.26 and 28,474.82

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Solution

The fourth proportional to 103,354.26, 155,031.26 and 28,474.82 is: 42,712.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,354.26 : 155,031.26 = 28,474.82 : x
  2. Step 2: Convert to fraction form
    103,354.26/155,031.26 = 28,474.82/x
  3. Step 3: Cross multiply
    103,354.26x = 155,031.26 × 28,474.82
  4. Step 4: Simplify right side
    103,354.26x = 4,414,487,222.87
  5. Step 5: Solve for x
    x = 4,414,487,222.87/103,354.26
  6. Step 6: Final answer
    x = 42,712.19

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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.