Home / 71,877.72-99,190.08-39,172.59

Finding the Fourth Proportional to 71,877.72, 99,190.08 and 39,172.59

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Solution

The fourth proportional to 71,877.72, 99,190.08 and 39,172.59 is: 54,057.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,877.72 : 99,190.08 = 39,172.59 : x
  2. Step 2: Convert to fraction form
    71,877.72/99,190.08 = 39,172.59/x
  3. Step 3: Cross multiply
    71,877.72x = 99,190.08 × 39,172.59
  4. Step 4: Simplify right side
    71,877.72x = 3,885,532,335.91
  5. Step 5: Solve for x
    x = 3,885,532,335.91/71,877.72
  6. Step 6: Final answer
    x = 54,057.53

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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.