Home / 77,020.87-115,541.05-26,429.75

Finding the Fourth Proportional to 77,020.87, 115,541.05 and 26,429.75

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Solution

The fourth proportional to 77,020.87, 115,541.05 and 26,429.75 is: 39,647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,020.87 : 115,541.05 = 26,429.75 : x
  2. Step 2: Convert to fraction form
    77,020.87/115,541.05 = 26,429.75/x
  3. Step 3: Cross multiply
    77,020.87x = 115,541.05 × 26,429.75
  4. Step 4: Simplify right side
    77,020.87x = 3,053,721,282.42
  5. Step 5: Solve for x
    x = 3,053,721,282.42/77,020.87
  6. Step 6: Final answer
    x = 39,647.97

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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.