Home / 85,286.36-127,928.64-29,125.82

Finding the Fourth Proportional to 85,286.36, 127,928.64 and 29,125.82

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Solution

The fourth proportional to 85,286.36, 127,928.64 and 29,125.82 is: 43,688.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,286.36 : 127,928.64 = 29,125.82 : x
  2. Step 2: Convert to fraction form
    85,286.36/127,928.64 = 29,125.82/x
  3. Step 3: Cross multiply
    85,286.36x = 127,928.64 × 29,125.82
  4. Step 4: Simplify right side
    85,286.36x = 3,726,026,541.48
  5. Step 5: Solve for x
    x = 3,726,026,541.48/85,286.36
  6. Step 6: Final answer
    x = 43,688.42

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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.