Home / 85,557.06-128,336.40-32,958.90

Finding the Fourth Proportional to 85,557.06, 128,336.40 and 32,958.90

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Solution

The fourth proportional to 85,557.06, 128,336.40 and 32,958.90 is: 49,438.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,557.06 : 128,336.40 = 32,958.90 : x
  2. Step 2: Convert to fraction form
    85,557.06/128,336.40 = 32,958.90/x
  3. Step 3: Cross multiply
    85,557.06x = 128,336.40 × 32,958.90
  4. Step 4: Simplify right side
    85,557.06x = 4,229,826,573.96
  5. Step 5: Solve for x
    x = 4,229,826,573.96/85,557.06
  6. Step 6: Final answer
    x = 49,438.66

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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.