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Finding the Fourth Proportional to 85,067.28, 117,206.28 and 63,465.84

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Solution

The fourth proportional to 85,067.28, 117,206.28 and 63,465.84 is: 87,443.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,067.28 : 117,206.28 = 63,465.84 : x
  2. Step 2: Convert to fraction form
    85,067.28/117,206.28 = 63,465.84/x
  3. Step 3: Cross multiply
    85,067.28x = 117,206.28 × 63,465.84
  4. Step 4: Simplify right side
    85,067.28x = 7,438,595,013.48
  5. Step 5: Solve for x
    x = 7,438,595,013.48/85,067.28
  6. Step 6: Final answer
    x = 87,443.67

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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.