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Finding the Fourth Proportional to 84,572.81, 126,843.33 and 42,441.58

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Solution

The fourth proportional to 84,572.81, 126,843.33 and 42,441.58 is: 63,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,572.81 : 126,843.33 = 42,441.58 : x
  2. Step 2: Convert to fraction form
    84,572.81/126,843.33 = 42,441.58/x
  3. Step 3: Cross multiply
    84,572.81x = 126,843.33 × 42,441.58
  4. Step 4: Simplify right side
    84,572.81x = 5,383,431,179.71
  5. Step 5: Solve for x
    x = 5,383,431,179.71/84,572.81
  6. Step 6: Final answer
    x = 63,654.40

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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.