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Finding the Fourth Proportional to 83,603.78, 125,405.76 and 39,230.58

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Solution

The fourth proportional to 83,603.78, 125,405.76 and 39,230.58 is: 58,845.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,603.78 : 125,405.76 = 39,230.58 : x
  2. Step 2: Convert to fraction form
    83,603.78/125,405.76 = 39,230.58/x
  3. Step 3: Cross multiply
    83,603.78x = 125,405.76 × 39,230.58
  4. Step 4: Simplify right side
    83,603.78x = 4,919,740,071.75
  5. Step 5: Solve for x
    x = 4,919,740,071.75/83,603.78
  6. Step 6: Final answer
    x = 58,845.90

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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.