Home / 85,310.45-127,990.26-26,154.84

Finding the Fourth Proportional to 85,310.45, 127,990.26 and 26,154.84

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Solution

The fourth proportional to 85,310.45, 127,990.26 and 26,154.84 is: 39,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,310.45 : 127,990.26 = 26,154.84 : x
  2. Step 2: Convert to fraction form
    85,310.45/127,990.26 = 26,154.84/x
  3. Step 3: Cross multiply
    85,310.45x = 127,990.26 × 26,154.84
  4. Step 4: Simplify right side
    85,310.45x = 3,347,564,771.86
  5. Step 5: Solve for x
    x = 3,347,564,771.86/85,310.45
  6. Step 6: Final answer
    x = 39,239.80

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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.