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Finding the Third Proportional to 35,715 and 77,779

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Solution

The third proportional to 35,715 and 77,779 is: 169,384.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,715 : 77,779 = 77,779 : x
  2. Step 2: Convert to fraction form
    35,715/77,779 = 77,779/x
  3. Step 3: Cross multiply
    35,715x = 77,779 × 77,779
  4. Step 4: Simplify right side
    35,715x = 6,049,572,841
  5. Step 5: Solve for x
    x = 6,049,572,841/35,715
  6. Step 6: Final answer
    x = 169,384.65

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.