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Finding the Fourth Proportional to 69,137.60, 103,204.40 and 64,276.16

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Solution

The fourth proportional to 69,137.60, 103,204.40 and 64,276.16 is: 95,947.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,137.60 : 103,204.40 = 64,276.16 : x
  2. Step 2: Convert to fraction form
    69,137.60/103,204.40 = 64,276.16/x
  3. Step 3: Cross multiply
    69,137.60x = 103,204.40 × 64,276.16
  4. Step 4: Simplify right side
    69,137.60x = 6,633,582,527.10
  5. Step 5: Solve for x
    x = 6,633,582,527.10/69,137.60
  6. Step 6: Final answer
    x = 95,947.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.