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Finding the Fourth Proportional to 66,506.76, 91,750.37 and 43,816.64

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Solution

The fourth proportional to 66,506.76, 91,750.37 and 43,816.64 is: 60,447.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.76 : 91,750.37 = 43,816.64 : x
  2. Step 2: Convert to fraction form
    66,506.76/91,750.37 = 43,816.64/x
  3. Step 3: Cross multiply
    66,506.76x = 91,750.37 × 43,816.64
  4. Step 4: Simplify right side
    66,506.76x = 4,020,192,254.32
  5. Step 5: Solve for x
    x = 4,020,192,254.32/66,506.76
  6. Step 6: Final answer
    x = 60,447.87

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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.