Home / 54,319.04-81,478.92-21,042.80

Finding the Fourth Proportional to 54,319.04, 81,478.92 and 21,042.80

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Solution

The fourth proportional to 54,319.04, 81,478.92 and 21,042.80 is: 31,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,319.04 : 81,478.92 = 21,042.80 : x
  2. Step 2: Convert to fraction form
    54,319.04/81,478.92 = 21,042.80/x
  3. Step 3: Cross multiply
    54,319.04x = 81,478.92 × 21,042.80
  4. Step 4: Simplify right side
    54,319.04x = 1,714,544,617.78
  5. Step 5: Solve for x
    x = 1,714,544,617.78/54,319.04
  6. Step 6: Final answer
    x = 31,564.34

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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.