Home / 51,887.99-77,863.48-20,720.63

Finding the Fourth Proportional to 51,887.99, 77,863.48 and 20,720.63

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Solution

The fourth proportional to 51,887.99, 77,863.48 and 20,720.63 is: 31,093.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,887.99 : 77,863.48 = 20,720.63 : x
  2. Step 2: Convert to fraction form
    51,887.99/77,863.48 = 20,720.63/x
  3. Step 3: Cross multiply
    51,887.99x = 77,863.48 × 20,720.63
  4. Step 4: Simplify right side
    51,887.99x = 1,613,379,918.47
  5. Step 5: Solve for x
    x = 1,613,379,918.47/51,887.99
  6. Step 6: Final answer
    x = 31,093.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.