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Finding the Third Proportional to 18,520,376 and 39,885,312

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Solution

The third proportional to 18,520,376 and 39,885,312 is: 85,896,642.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520,376 : 39,885,312 = 39,885,312 : x
  2. Step 2: Convert to fraction form
    18,520,376/39,885,312 = 39,885,312/x
  3. Step 3: Cross multiply
    18,520,376x = 39,885,312 × 39,885,312
  4. Step 4: Simplify right side
    18,520,376x = 1,590,838,113,337,344
  5. Step 5: Solve for x
    x = 1,590,838,113,337,344/18,520,376
  6. Step 6: Final answer
    x = 85,896,642.34

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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.