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Finding the Fourth Proportional to 73,390.73, 110,128.41 and 39,656.79

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Solution

The fourth proportional to 73,390.73, 110,128.41 and 39,656.79 is: 59,508.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,390.73 : 110,128.41 = 39,656.79 : x
  2. Step 2: Convert to fraction form
    73,390.73/110,128.41 = 39,656.79/x
  3. Step 3: Cross multiply
    73,390.73x = 110,128.41 × 39,656.79
  4. Step 4: Simplify right side
    73,390.73x = 4,367,339,228.40
  5. Step 5: Solve for x
    x = 4,367,339,228.40/73,390.73
  6. Step 6: Final answer
    x = 59,508.05

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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.