Home / 57,364.92-85,995.54-20,420.28

Finding the Fourth Proportional to 57,364.92, 85,995.54 and 20,420.28

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Solution

The fourth proportional to 57,364.92, 85,995.54 and 20,420.28 is: 30,611.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,364.92 : 85,995.54 = 20,420.28 : x
  2. Step 2: Convert to fraction form
    57,364.92/85,995.54 = 20,420.28/x
  3. Step 3: Cross multiply
    57,364.92x = 85,995.54 × 20,420.28
  4. Step 4: Simplify right side
    57,364.92x = 1,756,053,005.55
  5. Step 5: Solve for x
    x = 1,756,053,005.55/57,364.92
  6. Step 6: Final answer
    x = 30,611.97

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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.