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Finding the Fourth Proportional to 76,704.60, 114,948.90 and 60,936.60

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Solution

The fourth proportional to 76,704.60, 114,948.90 and 60,936.60 is: 91,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,704.60 : 114,948.90 = 60,936.60 : x
  2. Step 2: Convert to fraction form
    76,704.60/114,948.90 = 60,936.60/x
  3. Step 3: Cross multiply
    76,704.60x = 114,948.90 × 60,936.60
  4. Step 4: Simplify right side
    76,704.60x = 7,004,595,139.74
  5. Step 5: Solve for x
    x = 7,004,595,139.74/76,704.60
  6. Step 6: Final answer
    x = 91,319.10

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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.