Home / 70,209.90-96,878.34-39,995.82

Finding the Fourth Proportional to 70,209.90, 96,878.34 and 39,995.82

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Solution

The fourth proportional to 70,209.90, 96,878.34 and 39,995.82 is: 55,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,209.90 : 96,878.34 = 39,995.82 : x
  2. Step 2: Convert to fraction form
    70,209.90/96,878.34 = 39,995.82/x
  3. Step 3: Cross multiply
    70,209.90x = 96,878.34 × 39,995.82
  4. Step 4: Simplify right side
    70,209.90x = 3,874,728,648.54
  5. Step 5: Solve for x
    x = 3,874,728,648.54/70,209.90
  6. Step 6: Final answer
    x = 55,187.78

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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.