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Finding the Third Proportional to 21,197,178 and 45,915,804

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Solution

The third proportional to 21,197,178 and 45,915,804 is: 99,459,515.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197,178 : 45,915,804 = 45,915,804 : x
  2. Step 2: Convert to fraction form
    21,197,178/45,915,804 = 45,915,804/x
  3. Step 3: Cross multiply
    21,197,178x = 45,915,804 × 45,915,804
  4. Step 4: Simplify right side
    21,197,178x = 2,108,261,056,966,416
  5. Step 5: Solve for x
    x = 2,108,261,056,966,416/21,197,178
  6. Step 6: Final answer
    x = 99,459,515.65

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.