Home / 56,908.29-78,537.80-31,419.57

Finding the Fourth Proportional to 56,908.29, 78,537.80 and 31,419.57

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Solution

The fourth proportional to 56,908.29, 78,537.80 and 31,419.57 is: 43,361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.29 : 78,537.80 = 31,419.57 : x
  2. Step 2: Convert to fraction form
    56,908.29/78,537.80 = 31,419.57/x
  3. Step 3: Cross multiply
    56,908.29x = 78,537.80 × 31,419.57
  4. Step 4: Simplify right side
    56,908.29x = 2,467,623,747.65
  5. Step 5: Solve for x
    x = 2,467,623,747.65/56,908.29
  6. Step 6: Final answer
    x = 43,361.41

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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.