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Finding the Third Proportional to 19,976,979.38 and 42,985,869.75

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Solution

The third proportional to 19,976,979.38 and 42,985,869.75 is: 92,495,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976,979.38 : 42,985,869.75 = 42,985,869.75 : x
  2. Step 2: Convert to fraction form
    19,976,979.38/42,985,869.75 = 42,985,869.75/x
  3. Step 3: Cross multiply
    19,976,979.38x = 42,985,869.75 × 42,985,869.75
  4. Step 4: Simplify right side
    19,976,979.38x = 1,847,784,998,163,965
  5. Step 5: Solve for x
    x = 1,847,784,998,163,965/19,976,979.38
  6. Step 6: Final answer
    x = 92,495,715.37

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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.