Home / 85,724.25-118,272.13-55,532.72

Finding the Fourth Proportional to 85,724.25, 118,272.13 and 55,532.72

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Solution

The fourth proportional to 85,724.25, 118,272.13 and 55,532.72 is: 76,617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,724.25 : 118,272.13 = 55,532.72 : x
  2. Step 2: Convert to fraction form
    85,724.25/118,272.13 = 55,532.72/x
  3. Step 3: Cross multiply
    85,724.25x = 118,272.13 × 55,532.72
  4. Step 4: Simplify right side
    85,724.25x = 6,567,972,348.90
  5. Step 5: Solve for x
    x = 6,567,972,348.90/85,724.25
  6. Step 6: Final answer
    x = 76,617.44

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1.5x scale

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.