Home / 85,002.31-117,222.67-54,385.09

Finding the Fourth Proportional to 85,002.31, 117,222.67 and 54,385.09

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Solution

The fourth proportional to 85,002.31, 117,222.67 and 54,385.09 is: 74,999.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,002.31 : 117,222.67 = 54,385.09 : x
  2. Step 2: Convert to fraction form
    85,002.31/117,222.67 = 54,385.09/x
  3. Step 3: Cross multiply
    85,002.31x = 117,222.67 × 54,385.09
  4. Step 4: Simplify right side
    85,002.31x = 6,375,165,721.50
  5. Step 5: Solve for x
    x = 6,375,165,721.50/85,002.31
  6. Step 6: Final answer
    x = 74,999.91

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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.