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Finding the Fourth Proportional to 66,402.81, 91,625.42 and 37,325.45

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Solution

The fourth proportional to 66,402.81, 91,625.42 and 37,325.45 is: 51,503.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402.81 : 91,625.42 = 37,325.45 : x
  2. Step 2: Convert to fraction form
    66,402.81/91,625.42 = 37,325.45/x
  3. Step 3: Cross multiply
    66,402.81x = 91,625.42 × 37,325.45
  4. Step 4: Simplify right side
    66,402.81x = 3,419,960,355.32
  5. Step 5: Solve for x
    x = 3,419,960,355.32/66,402.81
  6. Step 6: Final answer
    x = 51,503.25

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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.