Home / 85,625.06-128,405.73-29,449.40

Finding the Fourth Proportional to 85,625.06, 128,405.73 and 29,449.40

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Solution

The fourth proportional to 85,625.06, 128,405.73 and 29,449.40 is: 44,163.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,625.06 : 128,405.73 = 29,449.40 : x
  2. Step 2: Convert to fraction form
    85,625.06/128,405.73 = 29,449.40/x
  3. Step 3: Cross multiply
    85,625.06x = 128,405.73 × 29,449.40
  4. Step 4: Simplify right side
    85,625.06x = 3,781,471,705.06
  5. Step 5: Solve for x
    x = 3,781,471,705.06/85,625.06
  6. Step 6: Final answer
    x = 44,163.14

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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.