Home / 45,521.78-68,299.02-20,542.80

Finding the Fourth Proportional to 45,521.78, 68,299.02 and 20,542.80

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Solution

The fourth proportional to 45,521.78, 68,299.02 and 20,542.80 is: 30,821.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,521.78 : 68,299.02 = 20,542.80 : x
  2. Step 2: Convert to fraction form
    45,521.78/68,299.02 = 20,542.80/x
  3. Step 3: Cross multiply
    45,521.78x = 68,299.02 × 20,542.80
  4. Step 4: Simplify right side
    45,521.78x = 1,403,053,108.06
  5. Step 5: Solve for x
    x = 1,403,053,108.06/45,521.78
  6. Step 6: Final answer
    x = 30,821.58

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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.