Home / 85,718.25-118,291.59-47,992.50

Finding the Fourth Proportional to 85,718.25, 118,291.59 and 47,992.50

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Solution

The fourth proportional to 85,718.25, 118,291.59 and 47,992.50 is: 66,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,718.25 : 118,291.59 = 47,992.50 : x
  2. Step 2: Convert to fraction form
    85,718.25/118,291.59 = 47,992.50/x
  3. Step 3: Cross multiply
    85,718.25x = 118,291.59 × 47,992.50
  4. Step 4: Simplify right side
    85,718.25x = 5,677,109,133.08
  5. Step 5: Solve for x
    x = 5,677,109,133.08/85,718.25
  6. Step 6: Final answer
    x = 66,229.88

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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.