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Finding the Third Proportional to 75,649.50 and 102,790.88

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Solution

The third proportional to 75,649.50 and 102,790.88 is: 139,669.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,649.50 : 102,790.88 = 102,790.88 : x
  2. Step 2: Convert to fraction form
    75,649.50/102,790.88 = 102,790.88/x
  3. Step 3: Cross multiply
    75,649.50x = 102,790.88 × 102,790.88
  4. Step 4: Simplify right side
    75,649.50x = 10,565,963,983.27
  5. Step 5: Solve for x
    x = 10,565,963,983.27/75,649.50
  6. Step 6: Final answer
    x = 139,669.98

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.