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Finding the Third Proportional to 45,391 and 69,047

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Solution

The third proportional to 45,391 and 69,047 is: 105,031.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,391 : 69,047 = 69,047 : x
  2. Step 2: Convert to fraction form
    45,391/69,047 = 69,047/x
  3. Step 3: Cross multiply
    45,391x = 69,047 × 69,047
  4. Step 4: Simplify right side
    45,391x = 4,767,488,209
  5. Step 5: Solve for x
    x = 4,767,488,209/45,391
  6. Step 6: Final answer
    x = 105,031.57

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.