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Finding the Fourth Proportional to 75,619.80, 104,358.78 and 42,087.96

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Solution

The fourth proportional to 75,619.80, 104,358.78 and 42,087.96 is: 58,083.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,619.80 : 104,358.78 = 42,087.96 : x
  2. Step 2: Convert to fraction form
    75,619.80/104,358.78 = 42,087.96/x
  3. Step 3: Cross multiply
    75,619.80x = 104,358.78 × 42,087.96
  4. Step 4: Simplify right side
    75,619.80x = 4,392,248,158.29
  5. Step 5: Solve for x
    x = 4,392,248,158.29/75,619.80
  6. Step 6: Final answer
    x = 58,083.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.