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Finding the Third Proportional to 18,970,655.50 and 40,818,559.75

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Solution

The third proportional to 18,970,655.50 and 40,818,559.75 is: 87,828,004.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970,655.50 : 40,818,559.75 = 40,818,559.75 : x
  2. Step 2: Convert to fraction form
    18,970,655.50/40,818,559.75 = 40,818,559.75/x
  3. Step 3: Cross multiply
    18,970,655.50x = 40,818,559.75 × 40,818,559.75
  4. Step 4: Simplify right side
    18,970,655.50x = 1,666,154,820,064,320
  5. Step 5: Solve for x
    x = 1,666,154,820,064,320/18,970,655.50
  6. Step 6: Final answer
    x = 87,828,004.68

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.