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Finding the Third Proportional to 30,786,471 and 66,931,500

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Solution

The third proportional to 30,786,471 and 66,931,500 is: 145,512,803.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,786,471 : 66,931,500 = 66,931,500 : x
  2. Step 2: Convert to fraction form
    30,786,471/66,931,500 = 66,931,500/x
  3. Step 3: Cross multiply
    30,786,471x = 66,931,500 × 66,931,500
  4. Step 4: Simplify right side
    30,786,471x = 4,479,825,692,250,000
  5. Step 5: Solve for x
    x = 4,479,825,692,250,000/30,786,471
  6. Step 6: Final answer
    x = 145,512,803.08

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.