Home / 54,019.20-81,028.80-40,897.20

Finding the Fourth Proportional to 54,019.20, 81,028.80 and 40,897.20

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Solution

The fourth proportional to 54,019.20, 81,028.80 and 40,897.20 is: 61,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,019.20 : 81,028.80 = 40,897.20 : x
  2. Step 2: Convert to fraction form
    54,019.20/81,028.80 = 40,897.20/x
  3. Step 3: Cross multiply
    54,019.20x = 81,028.80 × 40,897.20
  4. Step 4: Simplify right side
    54,019.20x = 3,313,851,039.36
  5. Step 5: Solve for x
    x = 3,313,851,039.36/54,019.20
  6. Step 6: Final answer
    x = 61,345.80

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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.