Home / 78,238.22-117,373.67-25,643.57

Finding the Fourth Proportional to 78,238.22, 117,373.67 and 25,643.57

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Solution

The fourth proportional to 78,238.22, 117,373.67 and 25,643.57 is: 38,470.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,238.22 : 117,373.67 = 25,643.57 : x
  2. Step 2: Convert to fraction form
    78,238.22/117,373.67 = 25,643.57/x
  3. Step 3: Cross multiply
    78,238.22x = 117,373.67 × 25,643.57
  4. Step 4: Simplify right side
    78,238.22x = 3,009,879,922.80
  5. Step 5: Solve for x
    x = 3,009,879,922.80/78,238.22
  6. Step 6: Final answer
    x = 38,470.71

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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.