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Finding the Fourth Proportional to 61,399.28, 91,943.40 and 37,954.64

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Solution

The fourth proportional to 61,399.28, 91,943.40 and 37,954.64 is: 56,835.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,399.28 : 91,943.40 = 37,954.64 : x
  2. Step 2: Convert to fraction form
    61,399.28/91,943.40 = 37,954.64/x
  3. Step 3: Cross multiply
    61,399.28x = 91,943.40 × 37,954.64
  4. Step 4: Simplify right side
    61,399.28x = 3,489,678,647.38
  5. Step 5: Solve for x
    x = 3,489,678,647.38/61,399.28
  6. Step 6: Final answer
    x = 56,835.82

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Why These Related Problems?

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