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Finding the Fourth Proportional to 85,856.88, 118,540.02 and 53,640.54

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Solution

The fourth proportional to 85,856.88, 118,540.02 and 53,640.54 is: 74,059.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,856.88 : 118,540.02 = 53,640.54 : x
  2. Step 2: Convert to fraction form
    85,856.88/118,540.02 = 53,640.54/x
  3. Step 3: Cross multiply
    85,856.88x = 118,540.02 × 53,640.54
  4. Step 4: Simplify right side
    85,856.88x = 6,358,550,684.41
  5. Step 5: Solve for x
    x = 6,358,550,684.41/85,856.88
  6. Step 6: Final answer
    x = 74,059.89

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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.