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Finding the Fourth Proportional to 85,049.91, 127,653.67 and 42,959.49

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Solution

The fourth proportional to 85,049.91, 127,653.67 and 42,959.49 is: 64,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,049.91 : 127,653.67 = 42,959.49 : x
  2. Step 2: Convert to fraction form
    85,049.91/127,653.67 = 42,959.49/x
  3. Step 3: Cross multiply
    85,049.91x = 127,653.67 × 42,959.49
  4. Step 4: Simplify right side
    85,049.91x = 5,483,936,773.09
  5. Step 5: Solve for x
    x = 5,483,936,773.09/85,049.91
  6. Step 6: Final answer
    x = 64,479.04

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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.