Home / 71,386.20-98,514.90-39,558.60

Finding the Fourth Proportional to 71,386.20, 98,514.90 and 39,558.60

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Solution

The fourth proportional to 71,386.20, 98,514.90 and 39,558.60 is: 54,591.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,386.20 : 98,514.90 = 39,558.60 : x
  2. Step 2: Convert to fraction form
    71,386.20/98,514.90 = 39,558.60/x
  3. Step 3: Cross multiply
    71,386.20x = 98,514.90 × 39,558.60
  4. Step 4: Simplify right side
    71,386.20x = 3,897,111,523.14
  5. Step 5: Solve for x
    x = 3,897,111,523.14/71,386.20
  6. Step 6: Final answer
    x = 54,591.95

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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.