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Finding the Fourth Proportional to 54,367,456.80, 81,551,185.20 and 30,180,986.40

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Solution

The fourth proportional to 54,367,456.80, 81,551,185.20 and 30,180,986.40 is: 45,271,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,367,456.80 : 81,551,185.20 = 30,180,986.40 : x
  2. Step 2: Convert to fraction form
    54,367,456.80/81,551,185.20 = 30,180,986.40/x
  3. Step 3: Cross multiply
    54,367,456.80x = 81,551,185.20 × 30,180,986.40
  4. Step 4: Simplify right side
    54,367,456.80x = 2,461,295,211,425,081
  5. Step 5: Solve for x
    x = 2,461,295,211,425,081/54,367,456.80
  6. Step 6: Final answer
    x = 45,271,479.60

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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.