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Finding the Fourth Proportional to 103,310.63, 154,945.54 and 28,411.45

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Solution

The fourth proportional to 103,310.63, 154,945.54 and 28,411.45 is: 42,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,310.63 : 154,945.54 = 28,411.45 : x
  2. Step 2: Convert to fraction form
    103,310.63/154,945.54 = 28,411.45/x
  3. Step 3: Cross multiply
    103,310.63x = 154,945.54 × 28,411.45
  4. Step 4: Simplify right side
    103,310.63x = 4,402,227,462.43
  5. Step 5: Solve for x
    x = 4,402,227,462.43/103,310.63
  6. Step 6: Final answer
    x = 42,611.56

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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.