Home / 39,767.30-54,879-22,771.80

Finding the Fourth Proportional to 39,767.30, 54,879 and 22,771.80

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Solution

The fourth proportional to 39,767.30, 54,879 and 22,771.80 is: 31,425.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,767.30 : 54,879 = 22,771.80 : x
  2. Step 2: Convert to fraction form
    39,767.30/54,879 = 22,771.80/x
  3. Step 3: Cross multiply
    39,767.30x = 54,879 × 22,771.80
  4. Step 4: Simplify right side
    39,767.30x = 1,249,693,612.20
  5. Step 5: Solve for x
    x = 1,249,693,612.20/39,767.30
  6. Step 6: Final answer
    x = 31,425.16

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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.