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Finding the Fourth Proportional to 69,006.58, 103,509.74 and 21,625.30

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Solution

The fourth proportional to 69,006.58, 103,509.74 and 21,625.30 is: 32,437.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,006.58 : 103,509.74 = 21,625.30 : x
  2. Step 2: Convert to fraction form
    69,006.58/103,509.74 = 21,625.30/x
  3. Step 3: Cross multiply
    69,006.58x = 103,509.74 × 21,625.30
  4. Step 4: Simplify right side
    69,006.58x = 2,238,429,180.42
  5. Step 5: Solve for x
    x = 2,238,429,180.42/69,006.58
  6. Step 6: Final answer
    x = 32,437.91

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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.