Home / 51,657.36-77,479.56-20,462.64

Finding the Fourth Proportional to 51,657.36, 77,479.56 and 20,462.64

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Solution

The fourth proportional to 51,657.36, 77,479.56 and 20,462.64 is: 30,691.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,657.36 : 77,479.56 = 20,462.64 : x
  2. Step 2: Convert to fraction form
    51,657.36/77,479.56 = 20,462.64/x
  3. Step 3: Cross multiply
    51,657.36x = 77,479.56 × 20,462.64
  4. Step 4: Simplify right side
    51,657.36x = 1,585,436,343.64
  5. Step 5: Solve for x
    x = 1,585,436,343.64/51,657.36
  6. Step 6: Final answer
    x = 30,691.39

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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.