Home / 79,077.20-109,149.93-55,211.56

Finding the Fourth Proportional to 79,077.20, 109,149.93 and 55,211.56

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Solution

The fourth proportional to 79,077.20, 109,149.93 and 55,211.56 is: 76,208.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,077.20 : 109,149.93 = 55,211.56 : x
  2. Step 2: Convert to fraction form
    79,077.20/109,149.93 = 55,211.56/x
  3. Step 3: Cross multiply
    79,077.20x = 109,149.93 × 55,211.56
  4. Step 4: Simplify right side
    79,077.20x = 6,026,337,636.32
  5. Step 5: Solve for x
    x = 6,026,337,636.32/79,077.20
  6. Step 6: Final answer
    x = 76,208.29

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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.