Home / 89,720.28-123,803.19-51,477.72

Finding the Fourth Proportional to 89,720.28, 123,803.19 and 51,477.72

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Solution

The fourth proportional to 89,720.28, 123,803.19 and 51,477.72 is: 71,033.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,720.28 : 123,803.19 = 51,477.72 : x
  2. Step 2: Convert to fraction form
    89,720.28/123,803.19 = 51,477.72/x
  3. Step 3: Cross multiply
    89,720.28x = 123,803.19 × 51,477.72
  4. Step 4: Simplify right side
    89,720.28x = 6,373,105,949.93
  5. Step 5: Solve for x
    x = 6,373,105,949.93/89,720.28
  6. Step 6: Final answer
    x = 71,033.06

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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.