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Finding the Fourth Proportional to 65,135.52, 89,887.02 and 36,840.60

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Solution

The fourth proportional to 65,135.52, 89,887.02 and 36,840.60 is: 50,840.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,135.52 : 89,887.02 = 36,840.60 : x
  2. Step 2: Convert to fraction form
    65,135.52/89,887.02 = 36,840.60/x
  3. Step 3: Cross multiply
    65,135.52x = 89,887.02 × 36,840.60
  4. Step 4: Simplify right side
    65,135.52x = 3,311,491,749.01
  5. Step 5: Solve for x
    x = 3,311,491,749.01/65,135.52
  6. Step 6: Final answer
    x = 50,840.03

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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.