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Finding the Fourth Proportional to 68,491.52, 94,544.67 and 61,308.77

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Solution

The fourth proportional to 68,491.52, 94,544.67 and 61,308.77 is: 84,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,491.52 : 94,544.67 = 61,308.77 : x
  2. Step 2: Convert to fraction form
    68,491.52/94,544.67 = 61,308.77/x
  3. Step 3: Cross multiply
    68,491.52x = 94,544.67 × 61,308.77
  4. Step 4: Simplify right side
    68,491.52x = 5,796,417,427.76
  5. Step 5: Solve for x
    x = 5,796,417,427.76/68,491.52
  6. Step 6: Final answer
    x = 84,629.71

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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.