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Finding the Fourth Proportional to 54,920.80, 82,394.70 and 15,477.40

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Solution

The fourth proportional to 54,920.80, 82,394.70 and 15,477.40 is: 23,219.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,920.80 : 82,394.70 = 15,477.40 : x
  2. Step 2: Convert to fraction form
    54,920.80/82,394.70 = 15,477.40/x
  3. Step 3: Cross multiply
    54,920.80x = 82,394.70 × 15,477.40
  4. Step 4: Simplify right side
    54,920.80x = 1,275,255,729.78
  5. Step 5: Solve for x
    x = 1,275,255,729.78/54,920.80
  6. Step 6: Final answer
    x = 23,219.90

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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.