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Finding the Fourth Proportional to 78,351.03, 117,541.11 and 25,797.42

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Solution

The fourth proportional to 78,351.03, 117,541.11 and 25,797.42 is: 38,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,351.03 : 117,541.11 = 25,797.42 : x
  2. Step 2: Convert to fraction form
    78,351.03/117,541.11 = 25,797.42/x
  3. Step 3: Cross multiply
    78,351.03x = 117,541.11 × 25,797.42
  4. Step 4: Simplify right side
    78,351.03x = 3,032,257,381.94
  5. Step 5: Solve for x
    x = 3,032,257,381.94/78,351.03
  6. Step 6: Final answer
    x = 38,700.93

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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.