Home / 85,724.38-128,550.42-32,407.36

Finding the Fourth Proportional to 85,724.38, 128,550.42 and 32,407.36

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Solution

The fourth proportional to 85,724.38, 128,550.42 and 32,407.36 is: 48,597.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,724.38 : 128,550.42 = 32,407.36 : x
  2. Step 2: Convert to fraction form
    85,724.38/128,550.42 = 32,407.36/x
  3. Step 3: Cross multiply
    85,724.38x = 128,550.42 × 32,407.36
  4. Step 4: Simplify right side
    85,724.38x = 4,165,979,739.09
  5. Step 5: Solve for x
    x = 4,165,979,739.09/85,724.38
  6. Step 6: Final answer
    x = 48,597.37

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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.