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Finding the Third Proportional to 39,000 and 55,572

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Solution

The third proportional to 39,000 and 55,572 is: 79,185.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,000 : 55,572 = 55,572 : x
  2. Step 2: Convert to fraction form
    39,000/55,572 = 55,572/x
  3. Step 3: Cross multiply
    39,000x = 55,572 × 55,572
  4. Step 4: Simplify right side
    39,000x = 3,088,247,184
  5. Step 5: Solve for x
    x = 3,088,247,184/39,000
  6. Step 6: Final answer
    x = 79,185.83

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.