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Finding the Fourth Proportional to 68,611.90, 102,903.44 and 19,352.38

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Solution

The fourth proportional to 68,611.90, 102,903.44 and 19,352.38 is: 29,024.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,611.90 : 102,903.44 = 19,352.38 : x
  2. Step 2: Convert to fraction form
    68,611.90/102,903.44 = 19,352.38/x
  3. Step 3: Cross multiply
    68,611.90x = 102,903.44 × 19,352.38
  4. Step 4: Simplify right side
    68,611.90x = 1,991,426,474.19
  5. Step 5: Solve for x
    x = 1,991,426,474.19/68,611.90
  6. Step 6: Final answer
    x = 29,024.51

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1.5x scale

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.