Home / 54,386.31-81,612.32-19,323.30

Finding the Fourth Proportional to 54,386.31, 81,612.32 and 19,323.30

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Solution

The fourth proportional to 54,386.31, 81,612.32 and 19,323.30 is: 28,996.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,386.31 : 81,612.32 = 19,323.30 : x
  2. Step 2: Convert to fraction form
    54,386.31/81,612.32 = 19,323.30/x
  3. Step 3: Cross multiply
    54,386.31x = 81,612.32 × 19,323.30
  4. Step 4: Simplify right side
    54,386.31x = 1,577,019,246.44
  5. Step 5: Solve for x
    x = 1,577,019,246.44/54,386.31
  6. Step 6: Final answer
    x = 28,996.62

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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.