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Finding the Third Proportional to 48,428 and 72,639

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Solution

The third proportional to 48,428 and 72,639 is: 108,954.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,428 : 72,639 = 72,639 : x
  2. Step 2: Convert to fraction form
    48,428/72,639 = 72,639/x
  3. Step 3: Cross multiply
    48,428x = 72,639 × 72,639
  4. Step 4: Simplify right side
    48,428x = 5,276,424,321
  5. Step 5: Solve for x
    x = 5,276,424,321/48,428
  6. Step 6: Final answer
    x = 108,954.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.