Home / 81,143.34-111,843.99-54,276.18

Finding the Fourth Proportional to 81,143.34, 111,843.99 and 54,276.18

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Solution

The fourth proportional to 81,143.34, 111,843.99 and 54,276.18 is: 74,811.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,143.34 : 111,843.99 = 54,276.18 : x
  2. Step 2: Convert to fraction form
    81,143.34/111,843.99 = 54,276.18/x
  3. Step 3: Cross multiply
    81,143.34x = 111,843.99 × 54,276.18
  4. Step 4: Simplify right side
    81,143.34x = 6,070,464,533.16
  5. Step 5: Solve for x
    x = 6,070,464,533.16/81,143.34
  6. Step 6: Final answer
    x = 74,811.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.