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Finding the Fourth Proportional to 76,738.60, 115,186.14 and 73,750.12

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Solution

The fourth proportional to 76,738.60, 115,186.14 and 73,750.12 is: 110,700.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,738.60 : 115,186.14 = 73,750.12 : x
  2. Step 2: Convert to fraction form
    76,738.60/115,186.14 = 73,750.12/x
  3. Step 3: Cross multiply
    76,738.60x = 115,186.14 × 73,750.12
  4. Step 4: Simplify right side
    76,738.60x = 8,494,991,647.34
  5. Step 5: Solve for x
    x = 8,494,991,647.34/76,738.60
  6. Step 6: Final answer
    x = 110,700.37

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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.