Home / 70,712.28-106,053.48-20,778.80

Finding the Fourth Proportional to 70,712.28, 106,053.48 and 20,778.80

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Solution

The fourth proportional to 70,712.28, 106,053.48 and 20,778.80 is: 31,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,712.28 : 106,053.48 = 20,778.80 : x
  2. Step 2: Convert to fraction form
    70,712.28/106,053.48 = 20,778.80/x
  3. Step 3: Cross multiply
    70,712.28x = 106,053.48 × 20,778.80
  4. Step 4: Simplify right side
    70,712.28x = 2,203,663,519.96
  5. Step 5: Solve for x
    x = 2,203,663,519.96/70,712.28
  6. Step 6: Final answer
    x = 31,163.80

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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.