Home / 85,511.16-117,994.86-47,784.60

Finding the Fourth Proportional to 85,511.16, 117,994.86 and 47,784.60

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Solution

The fourth proportional to 85,511.16, 117,994.86 and 47,784.60 is: 65,936.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,511.16 : 117,994.86 = 47,784.60 : x
  2. Step 2: Convert to fraction form
    85,511.16/117,994.86 = 47,784.60/x
  3. Step 3: Cross multiply
    85,511.16x = 117,994.86 × 47,784.60
  4. Step 4: Simplify right side
    85,511.16x = 5,638,337,187.16
  5. Step 5: Solve for x
    x = 5,638,337,187.16/85,511.16
  6. Step 6: Final answer
    x = 65,936.86

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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.