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Finding the Third Proportional to 30,338,478 and 66,860,903.50

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Solution

The third proportional to 30,338,478 and 66,860,903.50 is: 147,350,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,338,478 : 66,860,903.50 = 66,860,903.50 : x
  2. Step 2: Convert to fraction form
    30,338,478/66,860,903.50 = 66,860,903.50/x
  3. Step 3: Cross multiply
    30,338,478x = 66,860,903.50 × 66,860,903.50
  4. Step 4: Simplify right side
    30,338,478x = 4,470,380,416,836,312
  5. Step 5: Solve for x
    x = 4,470,380,416,836,312/30,338,478
  6. Step 6: Final answer
    x = 147,350,187.34

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.