Home / 85,723.38-128,548.92-32,406.36

Finding the Fourth Proportional to 85,723.38, 128,548.92 and 32,406.36

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Solution

The fourth proportional to 85,723.38, 128,548.92 and 32,406.36 is: 48,595.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,723.38 : 128,548.92 = 32,406.36 : x
  2. Step 2: Convert to fraction form
    85,723.38/128,548.92 = 32,406.36/x
  3. Step 3: Cross multiply
    85,723.38x = 128,548.92 × 32,406.36
  4. Step 4: Simplify right side
    85,723.38x = 4,165,802,579.13
  5. Step 5: Solve for x
    x = 4,165,802,579.13/85,723.38
  6. Step 6: Final answer
    x = 48,595.87

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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.