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Finding the Third Proportional to 21,018,385 and 45,278,066

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Solution

The third proportional to 21,018,385 and 45,278,066 is: 97,538,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018,385 : 45,278,066 = 45,278,066 : x
  2. Step 2: Convert to fraction form
    21,018,385/45,278,066 = 45,278,066/x
  3. Step 3: Cross multiply
    21,018,385x = 45,278,066 × 45,278,066
  4. Step 4: Simplify right side
    21,018,385x = 2,050,103,260,700,356
  5. Step 5: Solve for x
    x = 2,050,103,260,700,356/21,018,385
  6. Step 6: Final answer
    x = 97,538,572.10

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.