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Finding the Third Proportional to 18,528,078 and 40,245,688

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Solution

The third proportional to 18,528,078 and 40,245,688 is: 87,419,504.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,528,078 : 40,245,688 = 40,245,688 : x
  2. Step 2: Convert to fraction form
    18,528,078/40,245,688 = 40,245,688/x
  3. Step 3: Cross multiply
    18,528,078x = 40,245,688 × 40,245,688
  4. Step 4: Simplify right side
    18,528,078x = 1,619,715,402,593,344
  5. Step 5: Solve for x
    x = 1,619,715,402,593,344/18,528,078
  6. Step 6: Final answer
    x = 87,419,504.74

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.