Home / 82,509.40-123,764.10-43,078.60

Finding the Fourth Proportional to 82,509.40, 123,764.10 and 43,078.60

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Solution

The fourth proportional to 82,509.40, 123,764.10 and 43,078.60 is: 64,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,509.40 : 123,764.10 = 43,078.60 : x
  2. Step 2: Convert to fraction form
    82,509.40/123,764.10 = 43,078.60/x
  3. Step 3: Cross multiply
    82,509.40x = 123,764.10 × 43,078.60
  4. Step 4: Simplify right side
    82,509.40x = 5,331,584,158.26
  5. Step 5: Solve for x
    x = 5,331,584,158.26/82,509.40
  6. Step 6: Final answer
    x = 64,617.90

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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.