Home / 66,717.75-92,061.40-39,854.56

Finding the Fourth Proportional to 66,717.75, 92,061.40 and 39,854.56

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Solution

The fourth proportional to 66,717.75, 92,061.40 and 39,854.56 is: 54,993.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,717.75 : 92,061.40 = 39,854.56 : x
  2. Step 2: Convert to fraction form
    66,717.75/92,061.40 = 39,854.56/x
  3. Step 3: Cross multiply
    66,717.75x = 92,061.40 × 39,854.56
  4. Step 4: Simplify right side
    66,717.75x = 3,669,066,409.65
  5. Step 5: Solve for x
    x = 3,669,066,409.65/66,717.75
  6. Step 6: Final answer
    x = 54,993.86

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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.