Home / 78,245.46-117,391.59-55,493.16

Finding the Fourth Proportional to 78,245.46, 117,391.59 and 55,493.16

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Solution

The fourth proportional to 78,245.46, 117,391.59 and 55,493.16 is: 83,256.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,245.46 : 117,391.59 = 55,493.16 : x
  2. Step 2: Convert to fraction form
    78,245.46/117,391.59 = 55,493.16/x
  3. Step 3: Cross multiply
    78,245.46x = 117,391.59 × 55,493.16
  4. Step 4: Simplify right side
    78,245.46x = 6,514,430,286.52
  5. Step 5: Solve for x
    x = 6,514,430,286.52/78,245.46
  6. Step 6: Final answer
    x = 83,256.34

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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.