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Finding the Third Proportional to 64,730 and 97,689

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Solution

The third proportional to 64,730 and 97,689 is: 147,429.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,730 : 97,689 = 97,689 : x
  2. Step 2: Convert to fraction form
    64,730/97,689 = 97,689/x
  3. Step 3: Cross multiply
    64,730x = 97,689 × 97,689
  4. Step 4: Simplify right side
    64,730x = 9,543,140,721
  5. Step 5: Solve for x
    x = 9,543,140,721/64,730
  6. Step 6: Final answer
    x = 147,429.95

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Why These Related Problems?

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