Home / 85,356.18-127,924.11-40,890.42

Finding the Fourth Proportional to 85,356.18, 127,924.11 and 40,890.42

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Solution

The fourth proportional to 85,356.18, 127,924.11 and 40,890.42 is: 61,282.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,356.18 : 127,924.11 = 40,890.42 : x
  2. Step 2: Convert to fraction form
    85,356.18/127,924.11 = 40,890.42/x
  3. Step 3: Cross multiply
    85,356.18x = 127,924.11 × 40,890.42
  4. Step 4: Simplify right side
    85,356.18x = 5,230,870,586.03
  5. Step 5: Solve for x
    x = 5,230,870,586.03/85,356.18
  6. Step 6: Final answer
    x = 61,282.86

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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.