Home / 85,151.53-127,682.83-31,799.59

Finding the Fourth Proportional to 85,151.53, 127,682.83 and 31,799.59

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Solution

The fourth proportional to 85,151.53, 127,682.83 and 31,799.59 is: 47,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,151.53 : 127,682.83 = 31,799.59 : x
  2. Step 2: Convert to fraction form
    85,151.53/127,682.83 = 31,799.59/x
  3. Step 3: Cross multiply
    85,151.53x = 127,682.83 × 31,799.59
  4. Step 4: Simplify right side
    85,151.53x = 4,060,261,644.04
  5. Step 5: Solve for x
    x = 4,060,261,644.04/85,151.53
  6. Step 6: Final answer
    x = 47,682.78

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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.