Home / 56,721.03-85,078.95-21,179.58

Finding the Fourth Proportional to 56,721.03, 85,078.95 and 21,179.58

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Solution

The fourth proportional to 56,721.03, 85,078.95 and 21,179.58 is: 31,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,721.03 : 85,078.95 = 21,179.58 : x
  2. Step 2: Convert to fraction form
    56,721.03/85,078.95 = 21,179.58/x
  3. Step 3: Cross multiply
    56,721.03x = 85,078.95 × 21,179.58
  4. Step 4: Simplify right side
    56,721.03x = 1,801,936,427.84
  5. Step 5: Solve for x
    x = 1,801,936,427.84/56,721.03
  6. Step 6: Final answer
    x = 31,768.40

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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.