Home / 85,440.45-117,051.47-82,245.90

Finding the Fourth Proportional to 85,440.45, 117,051.47 and 82,245.90

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Solution

The fourth proportional to 85,440.45, 117,051.47 and 82,245.90 is: 112,675.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,440.45 : 117,051.47 = 82,245.90 : x
  2. Step 2: Convert to fraction form
    85,440.45/117,051.47 = 82,245.90/x
  3. Step 3: Cross multiply
    85,440.45x = 117,051.47 × 82,245.90
  4. Step 4: Simplify right side
    85,440.45x = 9,627,003,702.09
  5. Step 5: Solve for x
    x = 9,627,003,702.09/85,440.45
  6. Step 6: Final answer
    x = 112,675.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.