Home / 85,718.40-118,287.99-47,991.84

Finding the Fourth Proportional to 85,718.40, 118,287.99 and 47,991.84

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Solution

The fourth proportional to 85,718.40, 118,287.99 and 47,991.84 is: 66,226.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,718.40 : 118,287.99 = 47,991.84 : x
  2. Step 2: Convert to fraction form
    85,718.40/118,287.99 = 47,991.84/x
  3. Step 3: Cross multiply
    85,718.40x = 118,287.99 × 47,991.84
  4. Step 4: Simplify right side
    85,718.40x = 5,676,858,290.00
  5. Step 5: Solve for x
    x = 5,676,858,290.00/85,718.40
  6. Step 6: Final answer
    x = 66,226.83

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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.