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Finding the Fourth Proportional to 69,384.92, 103,968.36 and 53,628.51

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Solution

The fourth proportional to 69,384.92, 103,968.36 and 53,628.51 is: 80,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,384.92 : 103,968.36 = 53,628.51 : x
  2. Step 2: Convert to fraction form
    69,384.92/103,968.36 = 53,628.51/x
  3. Step 3: Cross multiply
    69,384.92x = 103,968.36 × 53,628.51
  4. Step 4: Simplify right side
    69,384.92x = 5,575,668,623.82
  5. Step 5: Solve for x
    x = 5,575,668,623.82/69,384.92
  6. Step 6: Final answer
    x = 80,358.51

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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.