Home / 54,189.20-81,283.80-39,328.40

Finding the Fourth Proportional to 54,189.20, 81,283.80 and 39,328.40

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Solution

The fourth proportional to 54,189.20, 81,283.80 and 39,328.40 is: 58,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,189.20 : 81,283.80 = 39,328.40 : x
  2. Step 2: Convert to fraction form
    54,189.20/81,283.80 = 39,328.40/x
  3. Step 3: Cross multiply
    54,189.20x = 81,283.80 × 39,328.40
  4. Step 4: Simplify right side
    54,189.20x = 3,196,761,799.92
  5. Step 5: Solve for x
    x = 3,196,761,799.92/54,189.20
  6. Step 6: Final answer
    x = 58,992.60

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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.