Home / 78,583.55-117,898.30-25,274.34

Finding the Fourth Proportional to 78,583.55, 117,898.30 and 25,274.34

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Solution

The fourth proportional to 78,583.55, 117,898.30 and 25,274.34 is: 37,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,583.55 : 117,898.30 = 25,274.34 : x
  2. Step 2: Convert to fraction form
    78,583.55/117,898.30 = 25,274.34/x
  3. Step 3: Cross multiply
    78,583.55x = 117,898.30 × 25,274.34
  4. Step 4: Simplify right side
    78,583.55x = 2,979,801,810.38
  5. Step 5: Solve for x
    x = 2,979,801,810.38/78,583.55
  6. Step 6: Final answer
    x = 37,918.90

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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.