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Finding the Fourth Proportional to 66,178.51, 91,328.39 and 37,893.31

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Solution

The fourth proportional to 66,178.51, 91,328.39 and 37,893.31 is: 52,293.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,178.51 : 91,328.39 = 37,893.31 : x
  2. Step 2: Convert to fraction form
    66,178.51/91,328.39 = 37,893.31/x
  3. Step 3: Cross multiply
    66,178.51x = 91,328.39 × 37,893.31
  4. Step 4: Simplify right side
    66,178.51x = 3,460,734,994.07
  5. Step 5: Solve for x
    x = 3,460,734,994.07/66,178.51
  6. Step 6: Final answer
    x = 52,293.94

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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.