Home / 85,189.28-117,561.08-49,400.08

Finding the Fourth Proportional to 85,189.28, 117,561.08 and 49,400.08

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Solution

The fourth proportional to 85,189.28, 117,561.08 and 49,400.08 is: 68,172.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,189.28 : 117,561.08 = 49,400.08 : x
  2. Step 2: Convert to fraction form
    85,189.28/117,561.08 = 49,400.08/x
  3. Step 3: Cross multiply
    85,189.28x = 117,561.08 × 49,400.08
  4. Step 4: Simplify right side
    85,189.28x = 5,807,526,756.89
  5. Step 5: Solve for x
    x = 5,807,526,756.89/85,189.28
  6. Step 6: Final answer
    x = 68,172.04

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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.