Home / 85,211.08-117,591.06-49,421.80

Finding the Fourth Proportional to 85,211.08, 117,591.06 and 49,421.80

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Solution

The fourth proportional to 85,211.08, 117,591.06 and 49,421.80 is: 68,201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211.08 : 117,591.06 = 49,421.80 : x
  2. Step 2: Convert to fraction form
    85,211.08/117,591.06 = 49,421.80/x
  3. Step 3: Cross multiply
    85,211.08x = 117,591.06 × 49,421.80
  4. Step 4: Simplify right side
    85,211.08x = 5,811,561,849.11
  5. Step 5: Solve for x
    x = 5,811,561,849.11/85,211.08
  6. Step 6: Final answer
    x = 68,201.95

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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.