Home / 78,308.64-117,383.04-30,892.86

Finding the Fourth Proportional to 78,308.64, 117,383.04 and 30,892.86

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Solution

The fourth proportional to 78,308.64, 117,383.04 and 30,892.86 is: 46,307.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,308.64 : 117,383.04 = 30,892.86 : x
  2. Step 2: Convert to fraction form
    78,308.64/117,383.04 = 30,892.86/x
  3. Step 3: Cross multiply
    78,308.64x = 117,383.04 × 30,892.86
  4. Step 4: Simplify right side
    78,308.64x = 3,626,297,821.09
  5. Step 5: Solve for x
    x = 3,626,297,821.09/78,308.64
  6. Step 6: Final answer
    x = 46,307.76

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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.