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Finding the Third Proportional to 64,877,120 and 90,702,188

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Solution

The third proportional to 64,877,120 and 90,702,188 is: 126,807,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,877,120 : 90,702,188 = 90,702,188 : x
  2. Step 2: Convert to fraction form
    64,877,120/90,702,188 = 90,702,188/x
  3. Step 3: Cross multiply
    64,877,120x = 90,702,188 × 90,702,188
  4. Step 4: Simplify right side
    64,877,120x = 8,226,886,907,987,344
  5. Step 5: Solve for x
    x = 8,226,886,907,987,344/64,877,120
  6. Step 6: Final answer
    x = 126,807,215.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.