Home / 39,671.42-54,750.09-21,769.91

Finding the Fourth Proportional to 39,671.42, 54,750.09 and 21,769.91

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Solution

The fourth proportional to 39,671.42, 54,750.09 and 21,769.91 is: 30,044.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,671.42 : 54,750.09 = 21,769.91 : x
  2. Step 2: Convert to fraction form
    39,671.42/54,750.09 = 21,769.91/x
  3. Step 3: Cross multiply
    39,671.42x = 54,750.09 × 21,769.91
  4. Step 4: Simplify right side
    39,671.42x = 1,191,904,531.79
  5. Step 5: Solve for x
    x = 1,191,904,531.79/39,671.42
  6. Step 6: Final answer
    x = 30,044.41

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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.