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Finding the Fourth Proportional to 54,619.20, 76,622.40 and 54,619.20

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Solution

The fourth proportional to 54,619.20, 76,622.40 and 54,619.20 is: 76,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,619.20 : 76,622.40 = 54,619.20 : x
  2. Step 2: Convert to fraction form
    54,619.20/76,622.40 = 54,619.20/x
  3. Step 3: Cross multiply
    54,619.20x = 76,622.40 × 54,619.20
  4. Step 4: Simplify right side
    54,619.20x = 4,185,054,190.08
  5. Step 5: Solve for x
    x = 4,185,054,190.08/54,619.20
  6. Step 6: Final answer
    x = 76,622.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.