Home / 56,858.70-78,463.31-31,708.20

Finding the Fourth Proportional to 56,858.70, 78,463.31 and 31,708.20

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Solution

The fourth proportional to 56,858.70, 78,463.31 and 31,708.20 is: 43,756.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,858.70 : 78,463.31 = 31,708.20 : x
  2. Step 2: Convert to fraction form
    56,858.70/78,463.31 = 31,708.20/x
  3. Step 3: Cross multiply
    56,858.70x = 78,463.31 × 31,708.20
  4. Step 4: Simplify right side
    56,858.70x = 2,487,930,167.60
  5. Step 5: Solve for x
    x = 2,487,930,167.60/56,858.70
  6. Step 6: Final answer
    x = 43,756.37

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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.