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Finding the Third Proportional to 18,455,690 and 40,385,389

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Solution

The third proportional to 18,455,690 and 40,385,389 is: 88,372,726.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455,690 : 40,385,389 = 40,385,389 : x
  2. Step 2: Convert to fraction form
    18,455,690/40,385,389 = 40,385,389/x
  3. Step 3: Cross multiply
    18,455,690x = 40,385,389 × 40,385,389
  4. Step 4: Simplify right side
    18,455,690x = 1,630,979,644,681,321
  5. Step 5: Solve for x
    x = 1,630,979,644,681,321/18,455,690
  6. Step 6: Final answer
    x = 88,372,726.50

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.