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Finding the Third Proportional to 30,465 and 47,080

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Solution

The third proportional to 30,465 and 47,080 is: 72,756.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,465 : 47,080 = 47,080 : x
  2. Step 2: Convert to fraction form
    30,465/47,080 = 47,080/x
  3. Step 3: Cross multiply
    30,465x = 47,080 × 47,080
  4. Step 4: Simplify right side
    30,465x = 2,216,526,400
  5. Step 5: Solve for x
    x = 2,216,526,400/30,465
  6. Step 6: Final answer
    x = 72,756.49

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.