Home / 42,778.97-64,074.91-21,682.79

Finding the Fourth Proportional to 42,778.97, 64,074.91 and 21,682.79

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Solution

The fourth proportional to 42,778.97, 64,074.91 and 21,682.79 is: 32,476.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.97 : 64,074.91 = 21,682.79 : x
  2. Step 2: Convert to fraction form
    42,778.97/64,074.91 = 21,682.79/x
  3. Step 3: Cross multiply
    42,778.97x = 64,074.91 × 21,682.79
  4. Step 4: Simplify right side
    42,778.97x = 1,389,322,817.80
  5. Step 5: Solve for x
    x = 1,389,322,817.80/42,778.97
  6. Step 6: Final answer
    x = 32,476.77

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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.