Home / 64,507.21-96,757.39-20,128.88

Finding the Fourth Proportional to 64,507.21, 96,757.39 and 20,128.88

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Solution

The fourth proportional to 64,507.21, 96,757.39 and 20,128.88 is: 30,192.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,507.21 : 96,757.39 = 20,128.88 : x
  2. Step 2: Convert to fraction form
    64,507.21/96,757.39 = 20,128.88/x
  3. Step 3: Cross multiply
    64,507.21x = 96,757.39 × 20,128.88
  4. Step 4: Simplify right side
    64,507.21x = 1,947,617,774.12
  5. Step 5: Solve for x
    x = 1,947,617,774.12/64,507.21
  6. Step 6: Final answer
    x = 30,192.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.