Home / 54,278.90-81,418.35-19,206.90

Finding the Fourth Proportional to 54,278.90, 81,418.35 and 19,206.90

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Solution

The fourth proportional to 54,278.90, 81,418.35 and 19,206.90 is: 28,810.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278.90 : 81,418.35 = 19,206.90 : x
  2. Step 2: Convert to fraction form
    54,278.90/81,418.35 = 19,206.90/x
  3. Step 3: Cross multiply
    54,278.90x = 81,418.35 × 19,206.90
  4. Step 4: Simplify right side
    54,278.90x = 1,563,794,106.62
  5. Step 5: Solve for x
    x = 1,563,794,106.62/54,278.90
  6. Step 6: Final answer
    x = 28,810.35

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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.