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Finding the Fourth Proportional to 66,311.88, 91,529.72 and 43,345.04

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Solution

The fourth proportional to 66,311.88, 91,529.72 and 43,345.04 is: 59,828.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,311.88 : 91,529.72 = 43,345.04 : x
  2. Step 2: Convert to fraction form
    66,311.88/91,529.72 = 43,345.04/x
  3. Step 3: Cross multiply
    66,311.88x = 91,529.72 × 43,345.04
  4. Step 4: Simplify right side
    66,311.88x = 3,967,359,374.59
  5. Step 5: Solve for x
    x = 3,967,359,374.59/66,311.88
  6. Step 6: Final answer
    x = 59,828.79

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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.