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Finding the Fourth Proportional to 68,359.10, 102,538.00 and 21,611.98

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Solution

The fourth proportional to 68,359.10, 102,538.00 and 21,611.98 is: 32,417.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,359.10 : 102,538.00 = 21,611.98 : x
  2. Step 2: Convert to fraction form
    68,359.10/102,538.00 = 21,611.98/x
  3. Step 3: Cross multiply
    68,359.10x = 102,538.00 × 21,611.98
  4. Step 4: Simplify right side
    68,359.10x = 2,216,048,746.58
  5. Step 5: Solve for x
    x = 2,216,048,746.58/68,359.10
  6. Step 6: Final answer
    x = 32,417.76

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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.