Home / 78,355.32-117,535.71-25,768.89

Finding the Fourth Proportional to 78,355.32, 117,535.71 and 25,768.89

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Solution

The fourth proportional to 78,355.32, 117,535.71 and 25,768.89 is: 38,654.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,355.32 : 117,535.71 = 25,768.89 : x
  2. Step 2: Convert to fraction form
    78,355.32/117,535.71 = 25,768.89/x
  3. Step 3: Cross multiply
    78,355.32x = 117,535.71 × 25,768.89
  4. Step 4: Simplify right side
    78,355.32x = 3,028,764,782.06
  5. Step 5: Solve for x
    x = 3,028,764,782.06/78,355.32
  6. Step 6: Final answer
    x = 38,654.23

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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.