Home / 73,315.13-109,977.35-20,728.71

Finding the Fourth Proportional to 73,315.13, 109,977.35 and 20,728.71

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Solution

The fourth proportional to 73,315.13, 109,977.35 and 20,728.71 is: 31,094.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,315.13 : 109,977.35 = 20,728.71 : x
  2. Step 2: Convert to fraction form
    73,315.13/109,977.35 = 20,728.71/x
  3. Step 3: Cross multiply
    73,315.13x = 109,977.35 × 20,728.71
  4. Step 4: Simplify right side
    73,315.13x = 2,279,688,491.07
  5. Step 5: Solve for x
    x = 2,279,688,491.07/73,315.13
  6. Step 6: Final answer
    x = 31,094.38

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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.