Home / 85,067.40-117,554.94-63,809.76

Finding the Fourth Proportional to 85,067.40, 117,554.94 and 63,809.76

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Solution

The fourth proportional to 85,067.40, 117,554.94 and 63,809.76 is: 88,178.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,067.40 : 117,554.94 = 63,809.76 : x
  2. Step 2: Convert to fraction form
    85,067.40/117,554.94 = 63,809.76/x
  3. Step 3: Cross multiply
    85,067.40x = 117,554.94 × 63,809.76
  4. Step 4: Simplify right side
    85,067.40x = 7,501,152,508.21
  5. Step 5: Solve for x
    x = 7,501,152,508.21/85,067.40
  6. Step 6: Final answer
    x = 88,178.93

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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.