Home / 71,378.20-98,503.86-39,550.60

Finding the Fourth Proportional to 71,378.20, 98,503.86 and 39,550.60

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Solution

The fourth proportional to 71,378.20, 98,503.86 and 39,550.60 is: 54,580.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,378.20 : 98,503.86 = 39,550.60 : x
  2. Step 2: Convert to fraction form
    71,378.20/98,503.86 = 39,550.60/x
  3. Step 3: Cross multiply
    71,378.20x = 98,503.86 × 39,550.60
  4. Step 4: Simplify right side
    71,378.20x = 3,895,886,765.32
  5. Step 5: Solve for x
    x = 3,895,886,765.32/71,378.20
  6. Step 6: Final answer
    x = 54,580.91

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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.