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Finding the Fourth Proportional to 57,782, 86,673 and 14,006

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Solution

The fourth proportional to 57,782, 86,673 and 14,006 is: 21,009

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,782 : 86,673 = 14,006 : x
  2. Step 2: Convert to fraction form
    57,782/86,673 = 14,006/x
  3. Step 3: Cross multiply
    57,782x = 86,673 × 14,006
  4. Step 4: Simplify right side
    57,782x = 1,213,942,038
  5. Step 5: Solve for x
    x = 1,213,942,038/57,782
  6. Step 6: Final answer
    x = 21,009

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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.