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Finding the Fourth Proportional to 76,704.58, 114,950.40 and 57,969.28

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Solution

The fourth proportional to 76,704.58, 114,950.40 and 57,969.28 is: 86,873.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,704.58 : 114,950.40 = 57,969.28 : x
  2. Step 2: Convert to fraction form
    76,704.58/114,950.40 = 57,969.28/x
  3. Step 3: Cross multiply
    76,704.58x = 114,950.40 × 57,969.28
  4. Step 4: Simplify right side
    76,704.58x = 6,663,591,923.71
  5. Step 5: Solve for x
    x = 6,663,591,923.71/76,704.58
  6. Step 6: Final answer
    x = 86,873.46

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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.