Home / 75,621.20-104,225.40-55,435.16

Finding the Fourth Proportional to 75,621.20, 104,225.40 and 55,435.16

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Solution

The fourth proportional to 75,621.20, 104,225.40 and 55,435.16 is: 76,403.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,621.20 : 104,225.40 = 55,435.16 : x
  2. Step 2: Convert to fraction form
    75,621.20/104,225.40 = 55,435.16/x
  3. Step 3: Cross multiply
    75,621.20x = 104,225.40 × 55,435.16
  4. Step 4: Simplify right side
    75,621.20x = 5,777,751,725.06
  5. Step 5: Solve for x
    x = 5,777,751,725.06/75,621.20
  6. Step 6: Final answer
    x = 76,403.86

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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.