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Finding the Fourth Proportional to 66,201.86, 91,273.23 and 54,089.67

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Solution

The fourth proportional to 66,201.86, 91,273.23 and 54,089.67 is: 74,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,201.86 : 91,273.23 = 54,089.67 : x
  2. Step 2: Convert to fraction form
    66,201.86/91,273.23 = 54,089.67/x
  3. Step 3: Cross multiply
    66,201.86x = 91,273.23 × 54,089.67
  4. Step 4: Simplify right side
    66,201.86x = 4,936,939,232.81
  5. Step 5: Solve for x
    x = 4,936,939,232.81/66,201.86
  6. Step 6: Final answer
    x = 74,574.03

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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.