Home / 85,606.40-128,433.22-35,709.96

Finding the Fourth Proportional to 85,606.40, 128,433.22 and 35,709.96

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Solution

The fourth proportional to 85,606.40, 128,433.22 and 35,709.96 is: 53,574.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,606.40 : 128,433.22 = 35,709.96 : x
  2. Step 2: Convert to fraction form
    85,606.40/128,433.22 = 35,709.96/x
  3. Step 3: Cross multiply
    85,606.40x = 128,433.22 × 35,709.96
  4. Step 4: Simplify right side
    85,606.40x = 4,586,345,148.87
  5. Step 5: Solve for x
    x = 4,586,345,148.87/85,606.40
  6. Step 6: Final answer
    x = 53,574.79

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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.