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Finding the Fourth Proportional to 69,356.64, 103,904.40 and 34,255.20

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Solution

The fourth proportional to 69,356.64, 103,904.40 and 34,255.20 is: 51,318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,356.64 : 103,904.40 = 34,255.20 : x
  2. Step 2: Convert to fraction form
    69,356.64/103,904.40 = 34,255.20/x
  3. Step 3: Cross multiply
    69,356.64x = 103,904.40 × 34,255.20
  4. Step 4: Simplify right side
    69,356.64x = 3,559,266,002.88
  5. Step 5: Solve for x
    x = 3,559,266,002.88/69,356.64
  6. Step 6: Final answer
    x = 51,318.32

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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.