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Finding the Third Proportional to 21,581,785 and 45,158,978

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Solution

The third proportional to 21,581,785 and 45,158,978 is: 94,493,263.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581,785 : 45,158,978 = 45,158,978 : x
  2. Step 2: Convert to fraction form
    21,581,785/45,158,978 = 45,158,978/x
  3. Step 3: Cross multiply
    21,581,785x = 45,158,978 × 45,158,978
  4. Step 4: Simplify right side
    21,581,785x = 2,039,333,294,004,484
  5. Step 5: Solve for x
    x = 2,039,333,294,004,484/21,581,785
  6. Step 6: Final answer
    x = 94,493,263.37

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.