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Finding the Fourth Proportional to 92,910.69, 128,213.82 and 52,628.18

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Solution

The fourth proportional to 92,910.69, 128,213.82 and 52,628.18 is: 72,625.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,910.69 : 128,213.82 = 52,628.18 : x
  2. Step 2: Convert to fraction form
    92,910.69/128,213.82 = 52,628.18/x
  3. Step 3: Cross multiply
    92,910.69x = 128,213.82 × 52,628.18
  4. Step 4: Simplify right side
    92,910.69x = 6,747,659,356.38
  5. Step 5: Solve for x
    x = 6,747,659,356.38/92,910.69
  6. Step 6: Final answer
    x = 72,625.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.