Home / 76,789.49-115,236.13-26,870.01

Finding the Fourth Proportional to 76,789.49, 115,236.13 and 26,870.01

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Solution

The fourth proportional to 76,789.49, 115,236.13 and 26,870.01 is: 40,323.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,789.49 : 115,236.13 = 26,870.01 : x
  2. Step 2: Convert to fraction form
    76,789.49/115,236.13 = 26,870.01/x
  3. Step 3: Cross multiply
    76,789.49x = 115,236.13 × 26,870.01
  4. Step 4: Simplify right side
    76,789.49x = 3,096,396,330.42
  5. Step 5: Solve for x
    x = 3,096,396,330.42/76,789.49
  6. Step 6: Final answer
    x = 40,323.18

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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.