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Finding the Fourth Proportional to 74,160.69, 111,259.26 and 21,570.63

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Solution

The fourth proportional to 74,160.69, 111,259.26 and 21,570.63 is: 32,361.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,160.69 : 111,259.26 = 21,570.63 : x
  2. Step 2: Convert to fraction form
    74,160.69/111,259.26 = 21,570.63/x
  3. Step 3: Cross multiply
    74,160.69x = 111,259.26 × 21,570.63
  4. Step 4: Simplify right side
    74,160.69x = 2,399,932,331.53
  5. Step 5: Solve for x
    x = 2,399,932,331.53/74,160.69
  6. Step 6: Final answer
    x = 32,361.25

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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.