Home / 85,243.78-117,634.16-47,002.68

Finding the Fourth Proportional to 85,243.78, 117,634.16 and 47,002.68

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Solution

The fourth proportional to 85,243.78, 117,634.16 and 47,002.68 is: 64,862.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,243.78 : 117,634.16 = 47,002.68 : x
  2. Step 2: Convert to fraction form
    85,243.78/117,634.16 = 47,002.68/x
  3. Step 3: Cross multiply
    85,243.78x = 117,634.16 × 47,002.68
  4. Step 4: Simplify right side
    85,243.78x = 5,529,120,544.54
  5. Step 5: Solve for x
    x = 5,529,120,544.54/85,243.78
  6. Step 6: Final answer
    x = 64,862.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.