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Finding the Fourth Proportional to 54,553.60, 81,830.40 and 28,266.40

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Solution

The fourth proportional to 54,553.60, 81,830.40 and 28,266.40 is: 42,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,553.60 : 81,830.40 = 28,266.40 : x
  2. Step 2: Convert to fraction form
    54,553.60/81,830.40 = 28,266.40/x
  3. Step 3: Cross multiply
    54,553.60x = 81,830.40 × 28,266.40
  4. Step 4: Simplify right side
    54,553.60x = 2,313,050,818.56
  5. Step 5: Solve for x
    x = 2,313,050,818.56/54,553.60
  6. Step 6: Final answer
    x = 42,399.60

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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.