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Finding the Fourth Proportional to 54,143.70, 81,203.40 and 35,554.20

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Solution

The fourth proportional to 54,143.70, 81,203.40 and 35,554.20 is: 53,323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,143.70 : 81,203.40 = 35,554.20 : x
  2. Step 2: Convert to fraction form
    54,143.70/81,203.40 = 35,554.20/x
  3. Step 3: Cross multiply
    54,143.70x = 81,203.40 × 35,554.20
  4. Step 4: Simplify right side
    54,143.70x = 2,887,121,924.28
  5. Step 5: Solve for x
    x = 2,887,121,924.28/54,143.70
  6. Step 6: Final answer
    x = 53,323.32

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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.