Home / 51,309.09-76,975.17-18,031.45

Finding the Fourth Proportional to 51,309.09, 76,975.17 and 18,031.45

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Solution

The fourth proportional to 51,309.09, 76,975.17 and 18,031.45 is: 27,051.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,309.09 : 76,975.17 = 18,031.45 : x
  2. Step 2: Convert to fraction form
    51,309.09/76,975.17 = 18,031.45/x
  3. Step 3: Cross multiply
    51,309.09x = 76,975.17 × 18,031.45
  4. Step 4: Simplify right side
    51,309.09x = 1,387,973,929.10
  5. Step 5: Solve for x
    x = 1,387,973,929.10/51,309.09
  6. Step 6: Final answer
    x = 27,051.23

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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.