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Finding the Fourth Proportional to 29,862.60, 44,745.30 and 21,989.40

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Solution

The fourth proportional to 29,862.60, 44,745.30 and 21,989.40 is: 32,948.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,862.60 : 44,745.30 = 21,989.40 : x
  2. Step 2: Convert to fraction form
    29,862.60/44,745.30 = 21,989.40/x
  3. Step 3: Cross multiply
    29,862.60x = 44,745.30 × 21,989.40
  4. Step 4: Simplify right side
    29,862.60x = 983,922,299.82
  5. Step 5: Solve for x
    x = 983,922,299.82/29,862.60
  6. Step 6: Final answer
    x = 32,948.31

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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.