Home / 54,239.20-81,359.52-19,154.32

Finding the Fourth Proportional to 54,239.20, 81,359.52 and 19,154.32

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Solution

The fourth proportional to 54,239.20, 81,359.52 and 19,154.32 is: 28,731.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,239.20 : 81,359.52 = 19,154.32 : x
  2. Step 2: Convert to fraction form
    54,239.20/81,359.52 = 19,154.32/x
  3. Step 3: Cross multiply
    54,239.20x = 81,359.52 × 19,154.32
  4. Step 4: Simplify right side
    54,239.20x = 1,558,386,281.13
  5. Step 5: Solve for x
    x = 1,558,386,281.13/54,239.20
  6. Step 6: Final answer
    x = 28,731.73

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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.