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Finding the Fourth Proportional to 69,858.84, 96,453.48 and 65,397.36

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Solution

The fourth proportional to 69,858.84, 96,453.48 and 65,397.36 is: 90,293.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,858.84 : 96,453.48 = 65,397.36 : x
  2. Step 2: Convert to fraction form
    69,858.84/96,453.48 = 65,397.36/x
  3. Step 3: Cross multiply
    69,858.84x = 96,453.48 × 65,397.36
  4. Step 4: Simplify right side
    69,858.84x = 6,307,802,954.81
  5. Step 5: Solve for x
    x = 6,307,802,954.81/69,858.84
  6. Step 6: Final answer
    x = 90,293.55

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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.