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Finding the Fourth Proportional to 62,890.54, 94,315.79 and 20,762.78

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Solution

The fourth proportional to 62,890.54, 94,315.79 and 20,762.78 is: 31,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,890.54 : 94,315.79 = 20,762.78 : x
  2. Step 2: Convert to fraction form
    62,890.54/94,315.79 = 20,762.78/x
  3. Step 3: Cross multiply
    62,890.54x = 94,315.79 × 20,762.78
  4. Step 4: Simplify right side
    62,890.54x = 1,958,257,998.30
  5. Step 5: Solve for x
    x = 1,958,257,998.30/62,890.54
  6. Step 6: Final answer
    x = 31,137.56

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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.