Home / 76,858.31-115,282.80-28,817.43

Finding the Fourth Proportional to 76,858.31, 115,282.80 and 28,817.43

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Solution

The fourth proportional to 76,858.31, 115,282.80 and 28,817.43 is: 43,224.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,858.31 : 115,282.80 = 28,817.43 : x
  2. Step 2: Convert to fraction form
    76,858.31/115,282.80 = 28,817.43/x
  3. Step 3: Cross multiply
    76,858.31x = 115,282.80 × 28,817.43
  4. Step 4: Simplify right side
    76,858.31x = 3,322,154,019.20
  5. Step 5: Solve for x
    x = 3,322,154,019.20/76,858.31
  6. Step 6: Final answer
    x = 43,224.40

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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.