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Finding the Fourth Proportional to 83,336.60, 124,978.95 and 27,919.64

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Solution

The fourth proportional to 83,336.60, 124,978.95 and 27,919.64 is: 41,870.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,336.60 : 124,978.95 = 27,919.64 : x
  2. Step 2: Convert to fraction form
    83,336.60/124,978.95 = 27,919.64/x
  3. Step 3: Cross multiply
    83,336.60x = 124,978.95 × 27,919.64
  4. Step 4: Simplify right side
    83,336.60x = 3,489,367,291.58
  5. Step 5: Solve for x
    x = 3,489,367,291.58/83,336.60
  6. Step 6: Final answer
    x = 41,870.77

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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.