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Finding the Third Proportional to 30,363,987 and 66,118,929

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Solution

The third proportional to 30,363,987 and 66,118,929 is: 143,976,901.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363,987 : 66,118,929 = 66,118,929 : x
  2. Step 2: Convert to fraction form
    30,363,987/66,118,929 = 66,118,929/x
  3. Step 3: Cross multiply
    30,363,987x = 66,118,929 × 66,118,929
  4. Step 4: Simplify right side
    30,363,987x = 4,371,712,772,107,041
  5. Step 5: Solve for x
    x = 4,371,712,772,107,041/30,363,987
  6. Step 6: Final answer
    x = 143,976,901.72

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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.