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Finding the Third Proportional to 45,488 and 66,931

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Solution

The third proportional to 45,488 and 66,931 is: 98,482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,488 : 66,931 = 66,931 : x
  2. Step 2: Convert to fraction form
    45,488/66,931 = 66,931/x
  3. Step 3: Cross multiply
    45,488x = 66,931 × 66,931
  4. Step 4: Simplify right side
    45,488x = 4,479,758,761
  5. Step 5: Solve for x
    x = 4,479,758,761/45,488
  6. Step 6: Final answer
    x = 98,482.21

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.