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Finding the Third Proportional to 18,837,543 and 40,686,558

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Solution

The third proportional to 18,837,543 and 40,686,558 is: 87,877,490.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,837,543 : 40,686,558 = 40,686,558 : x
  2. Step 2: Convert to fraction form
    18,837,543/40,686,558 = 40,686,558/x
  3. Step 3: Cross multiply
    18,837,543x = 40,686,558 × 40,686,558
  4. Step 4: Simplify right side
    18,837,543x = 1,655,396,001,887,364
  5. Step 5: Solve for x
    x = 1,655,396,001,887,364/18,837,543
  6. Step 6: Final answer
    x = 87,877,490.28

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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.