Home / 85,787.40-118,358.22-51,782.94

Finding the Fourth Proportional to 85,787.40, 118,358.22 and 51,782.94

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Solution

The fourth proportional to 85,787.40, 118,358.22 and 51,782.94 is: 71,443.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,787.40 : 118,358.22 = 51,782.94 : x
  2. Step 2: Convert to fraction form
    85,787.40/118,358.22 = 51,782.94/x
  3. Step 3: Cross multiply
    85,787.40x = 118,358.22 × 51,782.94
  4. Step 4: Simplify right side
    85,787.40x = 6,128,936,604.77
  5. Step 5: Solve for x
    x = 6,128,936,604.77/85,787.40
  6. Step 6: Final answer
    x = 71,443.32

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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.