Home / 85,311.30-127,990.20-26,145.66

Finding the Fourth Proportional to 85,311.30, 127,990.20 and 26,145.66

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Solution

The fourth proportional to 85,311.30, 127,990.20 and 26,145.66 is: 39,225.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,311.30 : 127,990.20 = 26,145.66 : x
  2. Step 2: Convert to fraction form
    85,311.30/127,990.20 = 26,145.66/x
  3. Step 3: Cross multiply
    85,311.30x = 127,990.20 × 26,145.66
  4. Step 4: Simplify right side
    85,311.30x = 3,346,388,252.53
  5. Step 5: Solve for x
    x = 3,346,388,252.53/85,311.30
  6. Step 6: Final answer
    x = 39,225.62

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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.