Home / 71,008.20-97,991.63-39,178.03

Finding the Fourth Proportional to 71,008.20, 97,991.63 and 39,178.03

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Solution

The fourth proportional to 71,008.20, 97,991.63 and 39,178.03 is: 54,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,008.20 : 97,991.63 = 39,178.03 : x
  2. Step 2: Convert to fraction form
    71,008.20/97,991.63 = 39,178.03/x
  3. Step 3: Cross multiply
    71,008.20x = 97,991.63 × 39,178.03
  4. Step 4: Simplify right side
    71,008.20x = 3,839,119,019.89
  5. Step 5: Solve for x
    x = 3,839,119,019.89/71,008.20
  6. Step 6: Final answer
    x = 54,065.85

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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.