Home / 85,128.24-127,559.90-32,509.02

Finding the Fourth Proportional to 85,128.24, 127,559.90 and 32,509.02

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Solution

The fourth proportional to 85,128.24, 127,559.90 and 32,509.02 is: 48,712.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,128.24 : 127,559.90 = 32,509.02 : x
  2. Step 2: Convert to fraction form
    85,128.24/127,559.90 = 32,509.02/x
  3. Step 3: Cross multiply
    85,128.24x = 127,559.90 × 32,509.02
  4. Step 4: Simplify right side
    85,128.24x = 4,146,847,340.30
  5. Step 5: Solve for x
    x = 4,146,847,340.30/85,128.24
  6. Step 6: Final answer
    x = 48,712.95

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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.