Home / 51,419.20-77,128.80-23,717.20

Finding the Fourth Proportional to 51,419.20, 77,128.80 and 23,717.20

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Solution

The fourth proportional to 51,419.20, 77,128.80 and 23,717.20 is: 35,575.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,419.20 : 77,128.80 = 23,717.20 : x
  2. Step 2: Convert to fraction form
    51,419.20/77,128.80 = 23,717.20/x
  3. Step 3: Cross multiply
    51,419.20x = 77,128.80 × 23,717.20
  4. Step 4: Simplify right side
    51,419.20x = 1,829,279,175.36
  5. Step 5: Solve for x
    x = 1,829,279,175.36/51,419.20
  6. Step 6: Final answer
    x = 35,575.80

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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.