Home / 78,222.72-117,343.80-25,614.03

Finding the Fourth Proportional to 78,222.72, 117,343.80 and 25,614.03

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Solution

The fourth proportional to 78,222.72, 117,343.80 and 25,614.03 is: 38,424.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,222.72 : 117,343.80 = 25,614.03 : x
  2. Step 2: Convert to fraction form
    78,222.72/117,343.80 = 25,614.03/x
  3. Step 3: Cross multiply
    78,222.72x = 117,343.80 × 25,614.03
  4. Step 4: Simplify right side
    78,222.72x = 3,005,647,613.51
  5. Step 5: Solve for x
    x = 3,005,647,613.51/78,222.72
  6. Step 6: Final answer
    x = 38,424.23

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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.