Home / 78,183.40-117,308.31-38,741.26

Finding the Fourth Proportional to 78,183.40, 117,308.31 and 38,741.26

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Solution

The fourth proportional to 78,183.40, 117,308.31 and 38,741.26 is: 58,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,183.40 : 117,308.31 = 38,741.26 : x
  2. Step 2: Convert to fraction form
    78,183.40/117,308.31 = 38,741.26/x
  3. Step 3: Cross multiply
    78,183.40x = 117,308.31 × 38,741.26
  4. Step 4: Simplify right side
    78,183.40x = 4,544,671,737.87
  5. Step 5: Solve for x
    x = 4,544,671,737.87/78,183.40
  6. Step 6: Final answer
    x = 58,128.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.