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Finding the Third Proportional to 28,454 and 40,987

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Solution

The third proportional to 28,454 and 40,987 is: 59,040.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454 : 40,987 = 40,987 : x
  2. Step 2: Convert to fraction form
    28,454/40,987 = 40,987/x
  3. Step 3: Cross multiply
    28,454x = 40,987 × 40,987
  4. Step 4: Simplify right side
    28,454x = 1,679,934,169
  5. Step 5: Solve for x
    x = 1,679,934,169/28,454
  6. Step 6: Final answer
    x = 59,040.35

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.