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Finding the Fourth Proportional to 69,409.28, 104,008.80 and 45,951.68

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Solution

The fourth proportional to 69,409.28, 104,008.80 and 45,951.68 is: 68,857.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,409.28 : 104,008.80 = 45,951.68 : x
  2. Step 2: Convert to fraction form
    69,409.28/104,008.80 = 45,951.68/x
  3. Step 3: Cross multiply
    69,409.28x = 104,008.80 × 45,951.68
  4. Step 4: Simplify right side
    69,409.28x = 4,779,379,094.78
  5. Step 5: Solve for x
    x = 4,779,379,094.78/69,409.28
  6. Step 6: Final answer
    x = 68,857.93

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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.