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Finding the Fourth Proportional to 104,286.59, 143,915.81 and 56,539.96

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Solution

The fourth proportional to 104,286.59, 143,915.81 and 56,539.96 is: 78,025.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,286.59 : 143,915.81 = 56,539.96 : x
  2. Step 2: Convert to fraction form
    104,286.59/143,915.81 = 56,539.96/x
  3. Step 3: Cross multiply
    104,286.59x = 143,915.81 × 56,539.96
  4. Step 4: Simplify right side
    104,286.59x = 8,136,993,498.28
  5. Step 5: Solve for x
    x = 8,136,993,498.28/104,286.59
  6. Step 6: Final answer
    x = 78,025.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.