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Finding the Fourth Proportional to 85,458.42, 117,922.56 and 47,215.71

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Solution

The fourth proportional to 85,458.42, 117,922.56 and 47,215.71 is: 65,152.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,458.42 : 117,922.56 = 47,215.71 : x
  2. Step 2: Convert to fraction form
    85,458.42/117,922.56 = 47,215.71/x
  3. Step 3: Cross multiply
    85,458.42x = 117,922.56 × 47,215.71
  4. Step 4: Simplify right side
    85,458.42x = 5,567,797,395.42
  5. Step 5: Solve for x
    x = 5,567,797,395.42/85,458.42
  6. Step 6: Final answer
    x = 65,152.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.