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Finding the Fourth Proportional to 78,325.44, 117,391.94 and 30,892.92

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Solution

The fourth proportional to 78,325.44, 117,391.94 and 30,892.92 is: 46,301.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,325.44 : 117,391.94 = 30,892.92 : x
  2. Step 2: Convert to fraction form
    78,325.44/117,391.94 = 30,892.92/x
  3. Step 3: Cross multiply
    78,325.44x = 117,391.94 × 30,892.92
  4. Step 4: Simplify right side
    78,325.44x = 3,626,579,656.60
  5. Step 5: Solve for x
    x = 3,626,579,656.60/78,325.44
  6. Step 6: Final answer
    x = 46,301.43

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1.5x scale

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.