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Finding the Fourth Proportional to 78,659.25, 118,581.84 and 73,585.41

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Solution

The fourth proportional to 78,659.25, 118,581.84 and 73,585.41 is: 110,932.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,659.25 : 118,581.84 = 73,585.41 : x
  2. Step 2: Convert to fraction form
    78,659.25/118,581.84 = 73,585.41/x
  3. Step 3: Cross multiply
    78,659.25x = 118,581.84 × 73,585.41
  4. Step 4: Simplify right side
    78,659.25x = 8,725,893,226.86
  5. Step 5: Solve for x
    x = 8,725,893,226.86/78,659.25
  6. Step 6: Final answer
    x = 110,932.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.