Home / 85,645.18-118,190.64-47,917

Finding the Fourth Proportional to 85,645.18, 118,190.64 and 47,917

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Solution

The fourth proportional to 85,645.18, 118,190.64 and 47,917 is: 66,125.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,645.18 : 118,190.64 = 47,917 : x
  2. Step 2: Convert to fraction form
    85,645.18/118,190.64 = 47,917/x
  3. Step 3: Cross multiply
    85,645.18x = 118,190.64 × 47,917
  4. Step 4: Simplify right side
    85,645.18x = 5,663,340,896.88
  5. Step 5: Solve for x
    x = 5,663,340,896.88/85,645.18
  6. Step 6: Final answer
    x = 66,125.62

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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.