Home / 85,787.30-128,698.13-29,629.46

Finding the Fourth Proportional to 85,787.30, 128,698.13 and 29,629.46

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Solution

The fourth proportional to 85,787.30, 128,698.13 and 29,629.46 is: 44,450.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,787.30 : 128,698.13 = 29,629.46 : x
  2. Step 2: Convert to fraction form
    85,787.30/128,698.13 = 29,629.46/x
  3. Step 3: Cross multiply
    85,787.30x = 128,698.13 × 29,629.46
  4. Step 4: Simplify right side
    85,787.30x = 3,813,256,490.73
  5. Step 5: Solve for x
    x = 3,813,256,490.73/85,787.30
  6. Step 6: Final answer
    x = 44,450.13

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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.