Home / 66,621.79-91,939.28-36,408.39

Finding the Fourth Proportional to 66,621.79, 91,939.28 and 36,408.39

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Solution

The fourth proportional to 66,621.79, 91,939.28 and 36,408.39 is: 50,244.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,621.79 : 91,939.28 = 36,408.39 : x
  2. Step 2: Convert to fraction form
    66,621.79/91,939.28 = 36,408.39/x
  3. Step 3: Cross multiply
    66,621.79x = 91,939.28 × 36,408.39
  4. Step 4: Simplify right side
    66,621.79x = 3,347,361,162.56
  5. Step 5: Solve for x
    x = 3,347,361,162.56/66,621.79
  6. Step 6: Final answer
    x = 50,244.24

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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.