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Finding the Fourth Proportional to 69,388.95, 103,974.41 and 53,632.55

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Solution

The fourth proportional to 69,388.95, 103,974.41 and 53,632.55 is: 80,364.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,388.95 : 103,974.41 = 53,632.55 : x
  2. Step 2: Convert to fraction form
    69,388.95/103,974.41 = 53,632.55/x
  3. Step 3: Cross multiply
    69,388.95x = 103,974.41 × 53,632.55
  4. Step 4: Simplify right side
    69,388.95x = 5,576,411,955.01
  5. Step 5: Solve for x
    x = 5,576,411,955.01/69,388.95
  6. Step 6: Final answer
    x = 80,364.55

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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.