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Finding the Third Proportional to 45,242 and 70,448

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Solution

The third proportional to 45,242 and 70,448 is: 109,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,242 : 70,448 = 70,448 : x
  2. Step 2: Convert to fraction form
    45,242/70,448 = 70,448/x
  3. Step 3: Cross multiply
    45,242x = 70,448 × 70,448
  4. Step 4: Simplify right side
    45,242x = 4,962,920,704
  5. Step 5: Solve for x
    x = 4,962,920,704/45,242
  6. Step 6: Final answer
    x = 109,697.20

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.