Home / 54,348.48-81,509.04-21,057.12

Finding the Fourth Proportional to 54,348.48, 81,509.04 and 21,057.12

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Solution

The fourth proportional to 54,348.48, 81,509.04 and 21,057.12 is: 31,580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,348.48 : 81,509.04 = 21,057.12 : x
  2. Step 2: Convert to fraction form
    54,348.48/81,509.04 = 21,057.12/x
  3. Step 3: Cross multiply
    54,348.48x = 81,509.04 × 21,057.12
  4. Step 4: Simplify right side
    54,348.48x = 1,716,345,636.36
  5. Step 5: Solve for x
    x = 1,716,345,636.36/54,348.48
  6. Step 6: Final answer
    x = 31,580.38

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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.