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Finding the Fourth Proportional to 54,753.80, 82,130.70 and 13,200.80

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Solution

The fourth proportional to 54,753.80, 82,130.70 and 13,200.80 is: 19,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,753.80 : 82,130.70 = 13,200.80 : x
  2. Step 2: Convert to fraction form
    54,753.80/82,130.70 = 13,200.80/x
  3. Step 3: Cross multiply
    54,753.80x = 82,130.70 × 13,200.80
  4. Step 4: Simplify right side
    54,753.80x = 1,084,190,944.56
  5. Step 5: Solve for x
    x = 1,084,190,944.56/54,753.80
  6. Step 6: Final answer
    x = 19,801.20

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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.