Home / 85,296.72-127,944-38,516.88

Finding the Fourth Proportional to 85,296.72, 127,944 and 38,516.88

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Solution

The fourth proportional to 85,296.72, 127,944 and 38,516.88 is: 57,774.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,296.72 : 127,944 = 38,516.88 : x
  2. Step 2: Convert to fraction form
    85,296.72/127,944 = 38,516.88/x
  3. Step 3: Cross multiply
    85,296.72x = 127,944 × 38,516.88
  4. Step 4: Simplify right side
    85,296.72x = 4,928,003,694.72
  5. Step 5: Solve for x
    x = 4,928,003,694.72/85,296.72
  6. Step 6: Final answer
    x = 57,774.83

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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.