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Finding the Third Proportional to 45,720 and 64,044

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Solution

The third proportional to 45,720 and 64,044 is: 89,712.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,720 : 64,044 = 64,044 : x
  2. Step 2: Convert to fraction form
    45,720/64,044 = 64,044/x
  3. Step 3: Cross multiply
    45,720x = 64,044 × 64,044
  4. Step 4: Simplify right side
    45,720x = 4,101,633,936
  5. Step 5: Solve for x
    x = 4,101,633,936/45,720
  6. Step 6: Final answer
    x = 89,712.03

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.