Home / 76,857.81-115,282.05-28,816.93

Finding the Fourth Proportional to 76,857.81, 115,282.05 and 28,816.93

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Solution

The fourth proportional to 76,857.81, 115,282.05 and 28,816.93 is: 43,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,857.81 : 115,282.05 = 28,816.93 : x
  2. Step 2: Convert to fraction form
    76,857.81/115,282.05 = 28,816.93/x
  3. Step 3: Cross multiply
    76,857.81x = 115,282.05 × 28,816.93
  4. Step 4: Simplify right side
    76,857.81x = 3,322,074,765.11
  5. Step 5: Solve for x
    x = 3,322,074,765.11/76,857.81
  6. Step 6: Final answer
    x = 43,223.65

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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.