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Finding the Fourth Proportional to 71,959.51, 107,930.85 and 19,364.86

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Solution

The fourth proportional to 71,959.51, 107,930.85 and 19,364.86 is: 29,045.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,959.51 : 107,930.85 = 19,364.86 : x
  2. Step 2: Convert to fraction form
    71,959.51/107,930.85 = 19,364.86/x
  3. Step 3: Cross multiply
    71,959.51x = 107,930.85 × 19,364.86
  4. Step 4: Simplify right side
    71,959.51x = 2,090,065,799.93
  5. Step 5: Solve for x
    x = 2,090,065,799.93/71,959.51
  6. Step 6: Final answer
    x = 29,045.03

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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.