Home / 85,211.52-117,515.16-53,383.20

Finding the Fourth Proportional to 85,211.52, 117,515.16 and 53,383.20

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Solution

The fourth proportional to 85,211.52, 117,515.16 and 53,383.20 is: 73,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211.52 : 117,515.16 = 53,383.20 : x
  2. Step 2: Convert to fraction form
    85,211.52/117,515.16 = 53,383.20/x
  3. Step 3: Cross multiply
    85,211.52x = 117,515.16 × 53,383.20
  4. Step 4: Simplify right side
    85,211.52x = 6,273,335,289.31
  5. Step 5: Solve for x
    x = 6,273,335,289.31/85,211.52
  6. Step 6: Final answer
    x = 73,620.74

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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.