Home / 85,036.58-117,512.34-63,778.94

Finding the Fourth Proportional to 85,036.58, 117,512.34 and 63,778.94

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Solution

The fourth proportional to 85,036.58, 117,512.34 and 63,778.94 is: 88,136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,036.58 : 117,512.34 = 63,778.94 : x
  2. Step 2: Convert to fraction form
    85,036.58/117,512.34 = 63,778.94/x
  3. Step 3: Cross multiply
    85,036.58x = 117,512.34 × 63,778.94
  4. Step 4: Simplify right side
    85,036.58x = 7,494,812,482.12
  5. Step 5: Solve for x
    x = 7,494,812,482.12/85,036.58
  6. Step 6: Final answer
    x = 88,136.33

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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.