Home / 85,419.36-117,874.44-47,686.32

Finding the Fourth Proportional to 85,419.36, 117,874.44 and 47,686.32

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Solution

The fourth proportional to 85,419.36, 117,874.44 and 47,686.32 is: 65,804.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,419.36 : 117,874.44 = 47,686.32 : x
  2. Step 2: Convert to fraction form
    85,419.36/117,874.44 = 47,686.32/x
  3. Step 3: Cross multiply
    85,419.36x = 117,874.44 × 47,686.32
  4. Step 4: Simplify right side
    85,419.36x = 5,620,998,265.66
  5. Step 5: Solve for x
    x = 5,620,998,265.66/85,419.36
  6. Step 6: Final answer
    x = 65,804.73

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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.