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Finding the Fourth Proportional to 69,409.81, 104,156.18 and 63,763.20

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Solution

The fourth proportional to 69,409.81, 104,156.18 and 63,763.20 is: 95,682.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,409.81 : 104,156.18 = 63,763.20 : x
  2. Step 2: Convert to fraction form
    69,409.81/104,156.18 = 63,763.20/x
  3. Step 3: Cross multiply
    69,409.81x = 104,156.18 × 63,763.20
  4. Step 4: Simplify right side
    69,409.81x = 6,641,331,256.87
  5. Step 5: Solve for x
    x = 6,641,331,256.87/69,409.81
  6. Step 6: Final answer
    x = 95,682.89

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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.