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Finding the Third Proportional to 18,831,120 and 39,922,020

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Solution

The third proportional to 18,831,120 and 39,922,020 is: 84,634,779.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831,120 : 39,922,020 = 39,922,020 : x
  2. Step 2: Convert to fraction form
    18,831,120/39,922,020 = 39,922,020/x
  3. Step 3: Cross multiply
    18,831,120x = 39,922,020 × 39,922,020
  4. Step 4: Simplify right side
    18,831,120x = 1,593,767,680,880,400
  5. Step 5: Solve for x
    x = 1,593,767,680,880,400/18,831,120
  6. Step 6: Final answer
    x = 84,634,779.07

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.