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Finding the Fourth Proportional to 62,907.64, 94,367.40 and 20,788

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Solution

The fourth proportional to 62,907.64, 94,367.40 and 20,788 is: 31,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,907.64 : 94,367.40 = 20,788 : x
  2. Step 2: Convert to fraction form
    62,907.64/94,367.40 = 20,788/x
  3. Step 3: Cross multiply
    62,907.64x = 94,367.40 × 20,788
  4. Step 4: Simplify right side
    62,907.64x = 1,961,709,511.20
  5. Step 5: Solve for x
    x = 1,961,709,511.20/62,907.64
  6. Step 6: Final answer
    x = 31,183.96

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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.