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Finding the Third Proportional to 18,751,143 and 28,176,639

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Solution

The third proportional to 18,751,143 and 28,176,639 is: 42,339,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751,143 : 28,176,639 = 28,176,639 : x
  2. Step 2: Convert to fraction form
    18,751,143/28,176,639 = 28,176,639/x
  3. Step 3: Cross multiply
    18,751,143x = 28,176,639 × 28,176,639
  4. Step 4: Simplify right side
    18,751,143x = 793,922,985,336,321
  5. Step 5: Solve for x
    x = 793,922,985,336,321/18,751,143
  6. Step 6: Final answer
    x = 42,339,978.17

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.