Home / 54,220.25-81,378.98-45,390.84

Finding the Fourth Proportional to 54,220.25, 81,378.98 and 45,390.84

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Solution

The fourth proportional to 54,220.25, 81,378.98 and 45,390.84 is: 68,126.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,220.25 : 81,378.98 = 45,390.84 : x
  2. Step 2: Convert to fraction form
    54,220.25/81,378.98 = 45,390.84/x
  3. Step 3: Cross multiply
    54,220.25x = 81,378.98 × 45,390.84
  4. Step 4: Simplify right side
    54,220.25x = 3,693,860,033.59
  5. Step 5: Solve for x
    x = 3,693,860,033.59/54,220.25
  6. Step 6: Final answer
    x = 68,126.95

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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.