Home / 78,371.62-117,560.40-25,785.34

Finding the Fourth Proportional to 78,371.62, 117,560.40 and 25,785.34

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Solution

The fourth proportional to 78,371.62, 117,560.40 and 25,785.34 is: 38,678.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,371.62 : 117,560.40 = 25,785.34 : x
  2. Step 2: Convert to fraction form
    78,371.62/117,560.40 = 25,785.34/x
  3. Step 3: Cross multiply
    78,371.62x = 117,560.40 × 25,785.34
  4. Step 4: Simplify right side
    78,371.62x = 3,031,334,884.54
  5. Step 5: Solve for x
    x = 3,031,334,884.54/78,371.62
  6. Step 6: Final answer
    x = 38,678.99

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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.