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Finding the Fourth Proportional to 78,245.73, 117,369.81 and 19,082.52

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Solution

The fourth proportional to 78,245.73, 117,369.81 and 19,082.52 is: 28,624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,245.73 : 117,369.81 = 19,082.52 : x
  2. Step 2: Convert to fraction form
    78,245.73/117,369.81 = 19,082.52/x
  3. Step 3: Cross multiply
    78,245.73x = 117,369.81 × 19,082.52
  4. Step 4: Simplify right side
    78,245.73x = 2,239,711,746.72
  5. Step 5: Solve for x
    x = 2,239,711,746.72/78,245.73
  6. Step 6: Final answer
    x = 28,624.08

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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.