Home / 54,100.20-81,150.30-40,978.20

Finding the Fourth Proportional to 54,100.20, 81,150.30 and 40,978.20

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Solution

The fourth proportional to 54,100.20, 81,150.30 and 40,978.20 is: 61,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,100.20 : 81,150.30 = 40,978.20 : x
  2. Step 2: Convert to fraction form
    54,100.20/81,150.30 = 40,978.20/x
  3. Step 3: Cross multiply
    54,100.20x = 81,150.30 × 40,978.20
  4. Step 4: Simplify right side
    54,100.20x = 3,325,393,223.46
  5. Step 5: Solve for x
    x = 3,325,393,223.46/54,100.20
  6. Step 6: Final answer
    x = 61,467.30

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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.