Home / 85,787.28-118,403.28-51,801.36

Finding the Fourth Proportional to 85,787.28, 118,403.28 and 51,801.36

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Solution

The fourth proportional to 85,787.28, 118,403.28 and 51,801.36 is: 71,496.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,787.28 : 118,403.28 = 51,801.36 : x
  2. Step 2: Convert to fraction form
    85,787.28/118,403.28 = 51,801.36/x
  3. Step 3: Cross multiply
    85,787.28x = 118,403.28 × 51,801.36
  4. Step 4: Simplify right side
    85,787.28x = 6,133,450,932.46
  5. Step 5: Solve for x
    x = 6,133,450,932.46/85,787.28
  6. Step 6: Final answer
    x = 71,496.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.