Home / 56,709.04-78,247.20-31,553.68

Finding the Fourth Proportional to 56,709.04, 78,247.20 and 31,553.68

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Solution

The fourth proportional to 56,709.04, 78,247.20 and 31,553.68 is: 43,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,709.04 : 78,247.20 = 31,553.68 : x
  2. Step 2: Convert to fraction form
    56,709.04/78,247.20 = 31,553.68/x
  3. Step 3: Cross multiply
    56,709.04x = 78,247.20 × 31,553.68
  4. Step 4: Simplify right side
    56,709.04x = 2,468,987,109.70
  5. Step 5: Solve for x
    x = 2,468,987,109.70/56,709.04
  6. Step 6: Final answer
    x = 43,537.80

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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.