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Finding the Fourth Proportional to 89,969.36, 124,033.56 and 64,496.48

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Solution

The fourth proportional to 89,969.36, 124,033.56 and 64,496.48 is: 88,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,969.36 : 124,033.56 = 64,496.48 : x
  2. Step 2: Convert to fraction form
    89,969.36/124,033.56 = 64,496.48/x
  3. Step 3: Cross multiply
    89,969.36x = 124,033.56 × 64,496.48
  4. Step 4: Simplify right side
    89,969.36x = 7,999,728,021.87
  5. Step 5: Solve for x
    x = 7,999,728,021.87/89,969.36
  6. Step 6: Final answer
    x = 88,916.14

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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.