Home / 71,638.09-98,858.60-39,806.17

Finding the Fourth Proportional to 71,638.09, 98,858.60 and 39,806.17

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Solution

The fourth proportional to 71,638.09, 98,858.60 and 39,806.17 is: 54,931.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,638.09 : 98,858.60 = 39,806.17 : x
  2. Step 2: Convert to fraction form
    71,638.09/98,858.60 = 39,806.17/x
  3. Step 3: Cross multiply
    71,638.09x = 98,858.60 × 39,806.17
  4. Step 4: Simplify right side
    71,638.09x = 3,935,181,544.24
  5. Step 5: Solve for x
    x = 3,935,181,544.24/71,638.09
  6. Step 6: Final answer
    x = 54,931.42

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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.