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Finding the Fourth Proportional to 71,188.44, 98,239.50 and 39,358.68

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Solution

The fourth proportional to 71,188.44, 98,239.50 and 39,358.68 is: 54,314.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.44 : 98,239.50 = 39,358.68 : x
  2. Step 2: Convert to fraction form
    71,188.44/98,239.50 = 39,358.68/x
  3. Step 3: Cross multiply
    71,188.44x = 98,239.50 × 39,358.68
  4. Step 4: Simplify right side
    71,188.44x = 3,866,577,043.86
  5. Step 5: Solve for x
    x = 3,866,577,043.86/71,188.44
  6. Step 6: Final answer
    x = 54,314.68

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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.