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Finding the Third Proportional to 25,820 and 39,702

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Solution

The third proportional to 25,820 and 39,702 is: 61,047.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,820 : 39,702 = 39,702 : x
  2. Step 2: Convert to fraction form
    25,820/39,702 = 39,702/x
  3. Step 3: Cross multiply
    25,820x = 39,702 × 39,702
  4. Step 4: Simplify right side
    25,820x = 1,576,248,804
  5. Step 5: Solve for x
    x = 1,576,248,804/25,820
  6. Step 6: Final answer
    x = 61,047.59

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.