Home / 85,618.22-118,153.25-47,379.36

Finding the Fourth Proportional to 85,618.22, 118,153.25 and 47,379.36

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Solution

The fourth proportional to 85,618.22, 118,153.25 and 47,379.36 is: 65,383.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,618.22 : 118,153.25 = 47,379.36 : x
  2. Step 2: Convert to fraction form
    85,618.22/118,153.25 = 47,379.36/x
  3. Step 3: Cross multiply
    85,618.22x = 118,153.25 × 47,379.36
  4. Step 4: Simplify right side
    85,618.22x = 5,598,025,750.77
  5. Step 5: Solve for x
    x = 5,598,025,750.77/85,618.22
  6. Step 6: Final answer
    x = 65,383.58

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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.