Home / 73,218.72-109,828.06-20,621.36

Finding the Fourth Proportional to 73,218.72, 109,828.06 and 20,621.36

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Solution

The fourth proportional to 73,218.72, 109,828.06 and 20,621.36 is: 30,932.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,218.72 : 109,828.06 = 20,621.36 : x
  2. Step 2: Convert to fraction form
    73,218.72/109,828.06 = 20,621.36/x
  3. Step 3: Cross multiply
    73,218.72x = 109,828.06 × 20,621.36
  4. Step 4: Simplify right side
    73,218.72x = 2,264,803,963.36
  5. Step 5: Solve for x
    x = 2,264,803,963.36/73,218.72
  6. Step 6: Final answer
    x = 30,932.03

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1.5x scale

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.