Home / 78,409.07-117,599.72-35,704.71

Finding the Fourth Proportional to 78,409.07, 117,599.72 and 35,704.71

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Solution

The fourth proportional to 78,409.07, 117,599.72 and 35,704.71 is: 53,550.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,409.07 : 117,599.72 = 35,704.71 : x
  2. Step 2: Convert to fraction form
    78,409.07/117,599.72 = 35,704.71/x
  3. Step 3: Cross multiply
    78,409.07x = 117,599.72 × 35,704.71
  4. Step 4: Simplify right side
    78,409.07x = 4,198,863,987.94
  5. Step 5: Solve for x
    x = 4,198,863,987.94/78,409.07
  6. Step 6: Final answer
    x = 53,550.74

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1.5x scale

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.