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Finding the Fourth Proportional to 66,466.13, 91,720.72 and 36,658.13

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Solution

The fourth proportional to 66,466.13, 91,720.72 and 36,658.13 is: 50,586.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466.13 : 91,720.72 = 36,658.13 : x
  2. Step 2: Convert to fraction form
    66,466.13/91,720.72 = 36,658.13/x
  3. Step 3: Cross multiply
    66,466.13x = 91,720.72 × 36,658.13
  4. Step 4: Simplify right side
    66,466.13x = 3,362,310,077.45
  5. Step 5: Solve for x
    x = 3,362,310,077.45/66,466.13
  6. Step 6: Final answer
    x = 50,586.82

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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.