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Finding the Fourth Proportional to 69,032.66, 103,680.27 and 42,919.88

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Solution

The fourth proportional to 69,032.66, 103,680.27 and 42,919.88 is: 64,461.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,032.66 : 103,680.27 = 42,919.88 : x
  2. Step 2: Convert to fraction form
    69,032.66/103,680.27 = 42,919.88/x
  3. Step 3: Cross multiply
    69,032.66x = 103,680.27 × 42,919.88
  4. Step 4: Simplify right side
    69,032.66x = 4,449,944,228.37
  5. Step 5: Solve for x
    x = 4,449,944,228.37/69,032.66
  6. Step 6: Final answer
    x = 64,461.44

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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.