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Finding the Fourth Proportional to 69,762.76, 104,709.90 and 25,432.36

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Solution

The fourth proportional to 69,762.76, 104,709.90 and 25,432.36 is: 38,172.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,762.76 : 104,709.90 = 25,432.36 : x
  2. Step 2: Convert to fraction form
    69,762.76/104,709.90 = 25,432.36/x
  3. Step 3: Cross multiply
    69,762.76x = 104,709.90 × 25,432.36
  4. Step 4: Simplify right side
    69,762.76x = 2,663,019,872.36
  5. Step 5: Solve for x
    x = 2,663,019,872.36/69,762.76
  6. Step 6: Final answer
    x = 38,172.51

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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.