Home / 54,186.40-81,279.60-40,362.40

Finding the Fourth Proportional to 54,186.40, 81,279.60 and 40,362.40

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Solution

The fourth proportional to 54,186.40, 81,279.60 and 40,362.40 is: 60,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,186.40 : 81,279.60 = 40,362.40 : x
  2. Step 2: Convert to fraction form
    54,186.40/81,279.60 = 40,362.40/x
  3. Step 3: Cross multiply
    54,186.40x = 81,279.60 × 40,362.40
  4. Step 4: Simplify right side
    54,186.40x = 3,280,639,727.04
  5. Step 5: Solve for x
    x = 3,280,639,727.04/54,186.40
  6. Step 6: Final answer
    x = 60,543.60

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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.