Home / 54,513.40-81,772.80-28,269.40

Finding the Fourth Proportional to 54,513.40, 81,772.80 and 28,269.40

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Solution

The fourth proportional to 54,513.40, 81,772.80 and 28,269.40 is: 42,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,513.40 : 81,772.80 = 28,269.40 : x
  2. Step 2: Convert to fraction form
    54,513.40/81,772.80 = 28,269.40/x
  3. Step 3: Cross multiply
    54,513.40x = 81,772.80 × 28,269.40
  4. Step 4: Simplify right side
    54,513.40x = 2,311,667,992.32
  5. Step 5: Solve for x
    x = 2,311,667,992.32/54,513.40
  6. Step 6: Final answer
    x = 42,405.50

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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.