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Finding the Fourth Proportional to 76,671.60, 115,093.80 and 59,218.80

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Solution

The fourth proportional to 76,671.60, 115,093.80 and 59,218.80 is: 88,894.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,671.60 : 115,093.80 = 59,218.80 : x
  2. Step 2: Convert to fraction form
    76,671.60/115,093.80 = 59,218.80/x
  3. Step 3: Cross multiply
    76,671.60x = 115,093.80 × 59,218.80
  4. Step 4: Simplify right side
    76,671.60x = 6,815,716,723.44
  5. Step 5: Solve for x
    x = 6,815,716,723.44/76,671.60
  6. Step 6: Final answer
    x = 88,894.93

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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.