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Finding the Fourth Proportional to 103,599.07, 155,383.22 and 28,711.42

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Solution

The fourth proportional to 103,599.07, 155,383.22 and 28,711.42 is: 43,062.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,599.07 : 155,383.22 = 28,711.42 : x
  2. Step 2: Convert to fraction form
    103,599.07/155,383.22 = 28,711.42/x
  3. Step 3: Cross multiply
    103,599.07x = 155,383.22 × 28,711.42
  4. Step 4: Simplify right side
    103,599.07x = 4,461,272,573.69
  5. Step 5: Solve for x
    x = 4,461,272,573.69/103,599.07
  6. Step 6: Final answer
    x = 43,062.86

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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.