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Finding the Fourth Proportional to 81,073.88, 121,795.36 and 58,653.72

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Solution

The fourth proportional to 81,073.88, 121,795.36 and 58,653.72 is: 88,114.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,073.88 : 121,795.36 = 58,653.72 : x
  2. Step 2: Convert to fraction form
    81,073.88/121,795.36 = 58,653.72/x
  3. Step 3: Cross multiply
    81,073.88x = 121,795.36 × 58,653.72
  4. Step 4: Simplify right side
    81,073.88x = 7,143,750,942.74
  5. Step 5: Solve for x
    x = 7,143,750,942.74/81,073.88
  6. Step 6: Final answer
    x = 88,114.09

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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.