Home / 85,579.55-118,060-55,374.61

Finding the Fourth Proportional to 85,579.55, 118,060 and 55,374.61

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Solution

The fourth proportional to 85,579.55, 118,060 and 55,374.61 is: 76,391.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,579.55 : 118,060 = 55,374.61 : x
  2. Step 2: Convert to fraction form
    85,579.55/118,060 = 55,374.61/x
  3. Step 3: Cross multiply
    85,579.55x = 118,060 × 55,374.61
  4. Step 4: Simplify right side
    85,579.55x = 6,537,526,456.60
  5. Step 5: Solve for x
    x = 6,537,526,456.60/85,579.55
  6. Step 6: Final answer
    x = 76,391.22

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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.