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Finding the Fourth Proportional to 93,131.88, 128,524.79 and 57,342.54

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Solution

The fourth proportional to 93,131.88, 128,524.79 and 57,342.54 is: 79,134.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,131.88 : 128,524.79 = 57,342.54 : x
  2. Step 2: Convert to fraction form
    93,131.88/128,524.79 = 57,342.54/x
  3. Step 3: Cross multiply
    93,131.88x = 128,524.79 × 57,342.54
  4. Step 4: Simplify right side
    93,131.88x = 7,369,937,624.85
  5. Step 5: Solve for x
    x = 7,369,937,624.85/93,131.88
  6. Step 6: Final answer
    x = 79,134.42

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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.