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Finding the Third Proportional to 42,570 and 64,449

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Solution

The third proportional to 42,570 and 64,449 is: 97,572.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,570 : 64,449 = 64,449 : x
  2. Step 2: Convert to fraction form
    42,570/64,449 = 64,449/x
  3. Step 3: Cross multiply
    42,570x = 64,449 × 64,449
  4. Step 4: Simplify right side
    42,570x = 4,153,673,601
  5. Step 5: Solve for x
    x = 4,153,673,601/42,570
  6. Step 6: Final answer
    x = 97,572.79

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.