Home / 78,341.44-117,468-25,736.80

Finding the Fourth Proportional to 78,341.44, 117,468 and 25,736.80

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Solution

The fourth proportional to 78,341.44, 117,468 and 25,736.80 is: 38,590.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,341.44 : 117,468 = 25,736.80 : x
  2. Step 2: Convert to fraction form
    78,341.44/117,468 = 25,736.80/x
  3. Step 3: Cross multiply
    78,341.44x = 117,468 × 25,736.80
  4. Step 4: Simplify right side
    78,341.44x = 3,023,250,422.40
  5. Step 5: Solve for x
    x = 3,023,250,422.40/78,341.44
  6. Step 6: Final answer
    x = 38,590.69

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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.