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Finding the Fourth Proportional to 103,351.96, 155,031.66 and 28,477.96

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Solution

The fourth proportional to 103,351.96, 155,031.66 and 28,477.96 is: 42,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,351.96 : 155,031.66 = 28,477.96 : x
  2. Step 2: Convert to fraction form
    103,351.96/155,031.66 = 28,477.96/x
  3. Step 3: Cross multiply
    103,351.96x = 155,031.66 × 28,477.96
  4. Step 4: Simplify right side
    103,351.96x = 4,414,985,412.21
  5. Step 5: Solve for x
    x = 4,414,985,412.21/103,351.96
  6. Step 6: Final answer
    x = 42,717.97

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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.