Home / 51,031.28-70,424.62-30,891.80

Finding the Fourth Proportional to 51,031.28, 70,424.62 and 30,891.80

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Solution

The fourth proportional to 51,031.28, 70,424.62 and 30,891.80 is: 42,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,031.28 : 70,424.62 = 30,891.80 : x
  2. Step 2: Convert to fraction form
    51,031.28/70,424.62 = 30,891.80/x
  3. Step 3: Cross multiply
    51,031.28x = 70,424.62 × 30,891.80
  4. Step 4: Simplify right side
    51,031.28x = 2,175,543,276.12
  5. Step 5: Solve for x
    x = 2,175,543,276.12/51,031.28
  6. Step 6: Final answer
    x = 42,631.56

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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.