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Finding the Fourth Proportional to 96,640, 133,363.44 and 56,381.44

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Solution

The fourth proportional to 96,640, 133,363.44 and 56,381.44 is: 77,806.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,640 : 133,363.44 = 56,381.44 : x
  2. Step 2: Convert to fraction form
    96,640/133,363.44 = 56,381.44/x
  3. Step 3: Cross multiply
    96,640x = 133,363.44 × 56,381.44
  4. Step 4: Simplify right side
    96,640x = 7,519,222,790.55
  5. Step 5: Solve for x
    x = 7,519,222,790.55/96,640
  6. Step 6: Final answer
    x = 77,806.53

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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.