Home / 85,821.68-118,436.74-47,584.80

Finding the Fourth Proportional to 85,821.68, 118,436.74 and 47,584.80

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Solution

The fourth proportional to 85,821.68, 118,436.74 and 47,584.80 is: 65,668.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,821.68 : 118,436.74 = 47,584.80 : x
  2. Step 2: Convert to fraction form
    85,821.68/118,436.74 = 47,584.80/x
  3. Step 3: Cross multiply
    85,821.68x = 118,436.74 × 47,584.80
  4. Step 4: Simplify right side
    85,821.68x = 5,635,788,466.59
  5. Step 5: Solve for x
    x = 5,635,788,466.59/85,821.68
  6. Step 6: Final answer
    x = 65,668.59

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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.