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Finding the Third Proportional to 30,363,989 and 66,118,933

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Solution

The third proportional to 30,363,989 and 66,118,933 is: 143,976,909.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363,989 : 66,118,933 = 66,118,933 : x
  2. Step 2: Convert to fraction form
    30,363,989/66,118,933 = 66,118,933/x
  3. Step 3: Cross multiply
    30,363,989x = 66,118,933 × 66,118,933
  4. Step 4: Simplify right side
    30,363,989x = 4,371,713,301,058,489
  5. Step 5: Solve for x
    x = 4,371,713,301,058,489/30,363,989
  6. Step 6: Final answer
    x = 143,976,909.66

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.