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Finding the Third Proportional to 30,506 and 48,720

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Solution

The third proportional to 30,506 and 48,720 is: 77,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,506 : 48,720 = 48,720 : x
  2. Step 2: Convert to fraction form
    30,506/48,720 = 48,720/x
  3. Step 3: Cross multiply
    30,506x = 48,720 × 48,720
  4. Step 4: Simplify right side
    30,506x = 2,373,638,400
  5. Step 5: Solve for x
    x = 2,373,638,400/30,506
  6. Step 6: Final answer
    x = 77,808.90

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.