Home / 56,708.49-78,257.99-31,217.42

Finding the Fourth Proportional to 56,708.49, 78,257.99 and 31,217.42

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Solution

The fourth proportional to 56,708.49, 78,257.99 and 31,217.42 is: 43,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,708.49 : 78,257.99 = 31,217.42 : x
  2. Step 2: Convert to fraction form
    56,708.49/78,257.99 = 31,217.42/x
  3. Step 3: Cross multiply
    56,708.49x = 78,257.99 × 31,217.42
  4. Step 4: Simplify right side
    56,708.49x = 2,443,012,542.19
  5. Step 5: Solve for x
    x = 2,443,012,542.19/56,708.49
  6. Step 6: Final answer
    x = 43,080.19

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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.