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Finding the Fourth Proportional to 78,745.95, 118,124.85 and 22,585.62

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Solution

The fourth proportional to 78,745.95, 118,124.85 and 22,585.62 is: 33,880.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,745.95 : 118,124.85 = 22,585.62 : x
  2. Step 2: Convert to fraction form
    78,745.95/118,124.85 = 22,585.62/x
  3. Step 3: Cross multiply
    78,745.95x = 118,124.85 × 22,585.62
  4. Step 4: Simplify right side
    78,745.95x = 2,667,922,974.66
  5. Step 5: Solve for x
    x = 2,667,922,974.66/78,745.95
  6. Step 6: Final answer
    x = 33,880.13

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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.