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Finding the Third Proportional to 18,867,940 and 40,426,709

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Solution

The third proportional to 18,867,940 and 40,426,709 is: 86,618,825.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867,940 : 40,426,709 = 40,426,709 : x
  2. Step 2: Convert to fraction form
    18,867,940/40,426,709 = 40,426,709/x
  3. Step 3: Cross multiply
    18,867,940x = 40,426,709 × 40,426,709
  4. Step 4: Simplify right side
    18,867,940x = 1,634,318,800,570,681
  5. Step 5: Solve for x
    x = 1,634,318,800,570,681/18,867,940
  6. Step 6: Final answer
    x = 86,618,825.40

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.