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Finding the Fourth Proportional to 69,288.40, 103,932.60 and 48,293.20

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Solution

The fourth proportional to 69,288.40, 103,932.60 and 48,293.20 is: 72,439.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,288.40 : 103,932.60 = 48,293.20 : x
  2. Step 2: Convert to fraction form
    69,288.40/103,932.60 = 48,293.20/x
  3. Step 3: Cross multiply
    69,288.40x = 103,932.60 × 48,293.20
  4. Step 4: Simplify right side
    69,288.40x = 5,019,237,838.32
  5. Step 5: Solve for x
    x = 5,019,237,838.32/69,288.40
  6. Step 6: Final answer
    x = 72,439.80

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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.