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Finding the Fourth Proportional to 71,188.60, 98,240.88 and 39,358.84

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Solution

The fourth proportional to 71,188.60, 98,240.88 and 39,358.84 is: 54,315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.60 : 98,240.88 = 39,358.84 : x
  2. Step 2: Convert to fraction form
    71,188.60/98,240.88 = 39,358.84/x
  3. Step 3: Cross multiply
    71,188.60x = 98,240.88 × 39,358.84
  4. Step 4: Simplify right side
    71,188.60x = 3,866,647,077.38
  5. Step 5: Solve for x
    x = 3,866,647,077.38/71,188.60
  6. Step 6: Final answer
    x = 54,315.54

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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.