Home / 85,999.68-128,946.24-29,826.56

Finding the Fourth Proportional to 85,999.68, 128,946.24 and 29,826.56

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Solution

The fourth proportional to 85,999.68, 128,946.24 and 29,826.56 is: 44,721.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,999.68 : 128,946.24 = 29,826.56 : x
  2. Step 2: Convert to fraction form
    85,999.68/128,946.24 = 29,826.56/x
  3. Step 3: Cross multiply
    85,999.68x = 128,946.24 × 29,826.56
  4. Step 4: Simplify right side
    85,999.68x = 3,846,022,764.13
  5. Step 5: Solve for x
    x = 3,846,022,764.13/85,999.68
  6. Step 6: Final answer
    x = 44,721.36

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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.