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Finding the Fourth Proportional to 69,978.93, 104,948.88 and 19,365.77

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Solution

The fourth proportional to 69,978.93, 104,948.88 and 19,365.77 is: 29,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,978.93 : 104,948.88 = 19,365.77 : x
  2. Step 2: Convert to fraction form
    69,978.93/104,948.88 = 19,365.77/x
  3. Step 3: Cross multiply
    69,978.93x = 104,948.88 × 19,365.77
  4. Step 4: Simplify right side
    69,978.93x = 2,032,415,347.09
  5. Step 5: Solve for x
    x = 2,032,415,347.09/69,978.93
  6. Step 6: Final answer
    x = 29,043.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.