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Finding the Fourth Proportional to 29,419.70, 44,137.02 and 8,643.20

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Solution

The fourth proportional to 29,419.70, 44,137.02 and 8,643.20 is: 12,966.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,419.70 : 44,137.02 = 8,643.20 : x
  2. Step 2: Convert to fraction form
    29,419.70/44,137.02 = 8,643.20/x
  3. Step 3: Cross multiply
    29,419.70x = 44,137.02 × 8,643.20
  4. Step 4: Simplify right side
    29,419.70x = 381,484,870.58
  5. Step 5: Solve for x
    x = 381,484,870.58/29,419.70
  6. Step 6: Final answer
    x = 12,966.99

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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.