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Finding the Third Proportional to 18,828,585 and 40,643,154

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Solution

The third proportional to 18,828,585 and 40,643,154 is: 87,731,816.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828,585 : 40,643,154 = 40,643,154 : x
  2. Step 2: Convert to fraction form
    18,828,585/40,643,154 = 40,643,154/x
  3. Step 3: Cross multiply
    18,828,585x = 40,643,154 × 40,643,154
  4. Step 4: Simplify right side
    18,828,585x = 1,651,865,967,067,716
  5. Step 5: Solve for x
    x = 1,651,865,967,067,716/18,828,585
  6. Step 6: Final answer
    x = 87,731,816.65

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.