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Finding the Third Proportional to 47,643 and 70,038

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Solution

The third proportional to 47,643 and 70,038 is: 102,959.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,643 : 70,038 = 70,038 : x
  2. Step 2: Convert to fraction form
    47,643/70,038 = 70,038/x
  3. Step 3: Cross multiply
    47,643x = 70,038 × 70,038
  4. Step 4: Simplify right side
    47,643x = 4,905,321,444
  5. Step 5: Solve for x
    x = 4,905,321,444/47,643
  6. Step 6: Final answer
    x = 102,959.96

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.