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Finding the Third Proportional to 64,940 and 97,840

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Solution

The third proportional to 64,940 and 97,840 is: 147,407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,940 : 97,840 = 97,840 : x
  2. Step 2: Convert to fraction form
    64,940/97,840 = 97,840/x
  3. Step 3: Cross multiply
    64,940x = 97,840 × 97,840
  4. Step 4: Simplify right side
    64,940x = 9,572,665,600
  5. Step 5: Solve for x
    x = 9,572,665,600/64,940
  6. Step 6: Final answer
    x = 147,407.85

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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.