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Finding the Fourth Proportional to 92,940.70, 139,313.58 and 45,490.36

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Solution

The fourth proportional to 92,940.70, 139,313.58 and 45,490.36 is: 68,187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,940.70 : 139,313.58 = 45,490.36 : x
  2. Step 2: Convert to fraction form
    92,940.70/139,313.58 = 45,490.36/x
  3. Step 3: Cross multiply
    92,940.70x = 139,313.58 × 45,490.36
  4. Step 4: Simplify right side
    92,940.70x = 6,337,424,907.09
  5. Step 5: Solve for x
    x = 6,337,424,907.09/92,940.70
  6. Step 6: Final answer
    x = 68,187.83

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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.