Home / 85,512.75-118,007.60-47,787

Finding the Fourth Proportional to 85,512.75, 118,007.60 and 47,787

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Solution

The fourth proportional to 85,512.75, 118,007.60 and 47,787 is: 65,946.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,512.75 : 118,007.60 = 47,787 : x
  2. Step 2: Convert to fraction form
    85,512.75/118,007.60 = 47,787/x
  3. Step 3: Cross multiply
    85,512.75x = 118,007.60 × 47,787
  4. Step 4: Simplify right side
    85,512.75x = 5,639,228,942.27
  5. Step 5: Solve for x
    x = 5,639,228,942.27/85,512.75
  6. Step 6: Final answer
    x = 65,946.06

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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.