Home / 78,403.58-108,200.70-48,190.18

Finding the Fourth Proportional to 78,403.58, 108,200.70 and 48,190.18

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Solution

The fourth proportional to 78,403.58, 108,200.70 and 48,190.18 is: 66,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,403.58 : 108,200.70 = 48,190.18 : x
  2. Step 2: Convert to fraction form
    78,403.58/108,200.70 = 48,190.18/x
  3. Step 3: Cross multiply
    78,403.58x = 108,200.70 × 48,190.18
  4. Step 4: Simplify right side
    78,403.58x = 5,214,211,209.13
  5. Step 5: Solve for x
    x = 5,214,211,209.13/78,403.58
  6. Step 6: Final answer
    x = 66,504.76

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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.