Home / 54,276.90-81,415.35-40,280.10

Finding the Fourth Proportional to 54,276.90, 81,415.35 and 40,280.10

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Solution

The fourth proportional to 54,276.90, 81,415.35 and 40,280.10 is: 60,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,276.90 : 81,415.35 = 40,280.10 : x
  2. Step 2: Convert to fraction form
    54,276.90/81,415.35 = 40,280.10/x
  3. Step 3: Cross multiply
    54,276.90x = 81,415.35 × 40,280.10
  4. Step 4: Simplify right side
    54,276.90x = 3,279,418,439.54
  5. Step 5: Solve for x
    x = 3,279,418,439.54/54,276.90
  6. Step 6: Final answer
    x = 60,420.15

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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.