Home / 69,728.12-96,212.90-39,507.20

Finding the Fourth Proportional to 69,728.12, 96,212.90 and 39,507.20

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Solution

The fourth proportional to 69,728.12, 96,212.90 and 39,507.20 is: 54,513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,728.12 : 96,212.90 = 39,507.20 : x
  2. Step 2: Convert to fraction form
    69,728.12/96,212.90 = 39,507.20/x
  3. Step 3: Cross multiply
    69,728.12x = 96,212.90 × 39,507.20
  4. Step 4: Simplify right side
    69,728.12x = 3,801,102,282.88
  5. Step 5: Solve for x
    x = 3,801,102,282.88/69,728.12
  6. Step 6: Final answer
    x = 54,513.19

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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.