Home / 77,974.36-116,940.78-21,810.98

Finding the Fourth Proportional to 77,974.36, 116,940.78 and 21,810.98

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Solution

The fourth proportional to 77,974.36, 116,940.78 and 21,810.98 is: 32,710.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,974.36 : 116,940.78 = 21,810.98 : x
  2. Step 2: Convert to fraction form
    77,974.36/116,940.78 = 21,810.98/x
  3. Step 3: Cross multiply
    77,974.36x = 116,940.78 × 21,810.98
  4. Step 4: Simplify right side
    77,974.36x = 2,550,593,306.12
  5. Step 5: Solve for x
    x = 2,550,593,306.12/77,974.36
  6. Step 6: Final answer
    x = 32,710.67

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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.