Home / 57,721.35-86,609.42-39,979.29

Finding the Fourth Proportional to 57,721.35, 86,609.42 and 39,979.29

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Solution

The fourth proportional to 57,721.35, 86,609.42 and 39,979.29 is: 59,987.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,721.35 : 86,609.42 = 39,979.29 : x
  2. Step 2: Convert to fraction form
    57,721.35/86,609.42 = 39,979.29/x
  3. Step 3: Cross multiply
    57,721.35x = 86,609.42 × 39,979.29
  4. Step 4: Simplify right side
    57,721.35x = 3,462,583,468.68
  5. Step 5: Solve for x
    x = 3,462,583,468.68/57,721.35
  6. Step 6: Final answer
    x = 59,987.91

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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.