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Finding the Fourth Proportional to 84,624.69, 126,940.52 and 69,806.01

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Solution

The fourth proportional to 84,624.69, 126,940.52 and 69,806.01 is: 104,711.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,624.69 : 126,940.52 = 69,806.01 : x
  2. Step 2: Convert to fraction form
    84,624.69/126,940.52 = 69,806.01/x
  3. Step 3: Cross multiply
    84,624.69x = 126,940.52 × 69,806.01
  4. Step 4: Simplify right side
    84,624.69x = 8,861,210,859.50
  5. Step 5: Solve for x
    x = 8,861,210,859.50/84,624.69
  6. Step 6: Final answer
    x = 104,711.89

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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.