Home / 65,768.54-90,336.62-64,507.68

Finding the Fourth Proportional to 65,768.54, 90,336.62 and 64,507.68

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Solution

The fourth proportional to 65,768.54, 90,336.62 and 64,507.68 is: 88,604.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,768.54 : 90,336.62 = 64,507.68 : x
  2. Step 2: Convert to fraction form
    65,768.54/90,336.62 = 64,507.68/x
  3. Step 3: Cross multiply
    65,768.54x = 90,336.62 × 64,507.68
  4. Step 4: Simplify right side
    65,768.54x = 5,827,405,936.51
  5. Step 5: Solve for x
    x = 5,827,405,936.51/65,768.54
  6. Step 6: Final answer
    x = 88,604.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.