Home / 51,039.47-70,418.21-30,889.91

Finding the Fourth Proportional to 51,039.47, 70,418.21 and 30,889.91

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Solution

The fourth proportional to 51,039.47, 70,418.21 and 30,889.91 is: 42,618.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,039.47 : 70,418.21 = 30,889.91 : x
  2. Step 2: Convert to fraction form
    51,039.47/70,418.21 = 30,889.91/x
  3. Step 3: Cross multiply
    51,039.47x = 70,418.21 × 30,889.91
  4. Step 4: Simplify right side
    51,039.47x = 2,175,211,662.72
  5. Step 5: Solve for x
    x = 2,175,211,662.72/51,039.47
  6. Step 6: Final answer
    x = 42,618.23

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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.