Home / 78,330.87-117,512.58-35,615.94

Finding the Fourth Proportional to 78,330.87, 117,512.58 and 35,615.94

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Solution

The fourth proportional to 78,330.87, 117,512.58 and 35,615.94 is: 53,431.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.87 : 117,512.58 = 35,615.94 : x
  2. Step 2: Convert to fraction form
    78,330.87/117,512.58 = 35,615.94/x
  3. Step 3: Cross multiply
    78,330.87x = 117,512.58 × 35,615.94
  4. Step 4: Simplify right side
    78,330.87x = 4,185,320,998.53
  5. Step 5: Solve for x
    x = 4,185,320,998.53/78,330.87
  6. Step 6: Final answer
    x = 53,431.31

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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.