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Finding the Fourth Proportional to 66,507.76, 91,751.74 and 43,817.64

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Solution

The fourth proportional to 66,507.76, 91,751.74 and 43,817.64 is: 60,449.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,507.76 : 91,751.74 = 43,817.64 : x
  2. Step 2: Convert to fraction form
    66,507.76/91,751.74 = 43,817.64/x
  3. Step 3: Cross multiply
    66,507.76x = 91,751.74 × 43,817.64
  4. Step 4: Simplify right side
    66,507.76x = 4,020,344,712.69
  5. Step 5: Solve for x
    x = 4,020,344,712.69/66,507.76
  6. Step 6: Final answer
    x = 60,449.26

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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.