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Finding the Third Proportional to 8,773,721.28 and 18,934,690.40

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Solution

The third proportional to 8,773,721.28 and 18,934,690.40 is: 40,863,219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,773,721.28 : 18,934,690.40 = 18,934,690.40 : x
  2. Step 2: Convert to fraction form
    8,773,721.28/18,934,690.40 = 18,934,690.40/x
  3. Step 3: Cross multiply
    8,773,721.28x = 18,934,690.40 × 18,934,690.40
  4. Step 4: Simplify right side
    8,773,721.28x = 358,522,500,503,218.31
  5. Step 5: Solve for x
    x = 358,522,500,503,218.31/8,773,721.28
  6. Step 6: Final answer
    x = 40,863,219.74

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.