Home / 76,858.81-115,283.55-28,817.93

Finding the Fourth Proportional to 76,858.81, 115,283.55 and 28,817.93

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Solution

The fourth proportional to 76,858.81, 115,283.55 and 28,817.93 is: 43,225.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,858.81 : 115,283.55 = 28,817.93 : x
  2. Step 2: Convert to fraction form
    76,858.81/115,283.55 = 28,817.93/x
  3. Step 3: Cross multiply
    76,858.81x = 115,283.55 × 28,817.93
  4. Step 4: Simplify right side
    76,858.81x = 3,322,233,274.05
  5. Step 5: Solve for x
    x = 3,322,233,274.05/76,858.81
  6. Step 6: Final answer
    x = 43,225.15

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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.