Home / 51,136.69-70,549.90-30,979.03

Finding the Fourth Proportional to 51,136.69, 70,549.90 and 30,979.03

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Solution

The fourth proportional to 51,136.69, 70,549.90 and 30,979.03 is: 42,739.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,136.69 : 70,549.90 = 30,979.03 : x
  2. Step 2: Convert to fraction form
    51,136.69/70,549.90 = 30,979.03/x
  3. Step 3: Cross multiply
    51,136.69x = 70,549.90 × 30,979.03
  4. Step 4: Simplify right side
    51,136.69x = 2,185,567,468.60
  5. Step 5: Solve for x
    x = 2,185,567,468.60/51,136.69
  6. Step 6: Final answer
    x = 42,739.71

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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.