Home / 51,021.72-70,409.91-28,359.99

Finding the Fourth Proportional to 51,021.72, 70,409.91 and 28,359.99

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Solution

The fourth proportional to 51,021.72, 70,409.91 and 28,359.99 is: 39,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,021.72 : 70,409.91 = 28,359.99 : x
  2. Step 2: Convert to fraction form
    51,021.72/70,409.91 = 28,359.99/x
  3. Step 3: Cross multiply
    51,021.72x = 70,409.91 × 28,359.99
  4. Step 4: Simplify right side
    51,021.72x = 1,996,824,343.50
  5. Step 5: Solve for x
    x = 1,996,824,343.50/51,021.72
  6. Step 6: Final answer
    x = 39,136.75

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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.