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Finding the Fourth Proportional to 66,231.47, 91,395.74 and 37,938.98

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Solution

The fourth proportional to 66,231.47, 91,395.74 and 37,938.98 is: 52,353.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,231.47 : 91,395.74 = 37,938.98 : x
  2. Step 2: Convert to fraction form
    66,231.47/91,395.74 = 37,938.98/x
  3. Step 3: Cross multiply
    66,231.47x = 91,395.74 × 37,938.98
  4. Step 4: Simplify right side
    66,231.47x = 3,467,460,962.25
  5. Step 5: Solve for x
    x = 3,467,460,962.25/66,231.47
  6. Step 6: Final answer
    x = 52,353.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.