Home / 85,659.11-128,485.98-40,712.82

Finding the Fourth Proportional to 85,659.11, 128,485.98 and 40,712.82

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Solution

The fourth proportional to 85,659.11, 128,485.98 and 40,712.82 is: 61,067.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,659.11 : 128,485.98 = 40,712.82 : x
  2. Step 2: Convert to fraction form
    85,659.11/128,485.98 = 40,712.82/x
  3. Step 3: Cross multiply
    85,659.11x = 128,485.98 × 40,712.82
  4. Step 4: Simplify right side
    85,659.11x = 5,231,026,576.26
  5. Step 5: Solve for x
    x = 5,231,026,576.26/85,659.11
  6. Step 6: Final answer
    x = 61,067.96

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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.