Home / 85,310.21-117,729.30-47,071.43

Finding the Fourth Proportional to 85,310.21, 117,729.30 and 47,071.43

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Solution

The fourth proportional to 85,310.21, 117,729.30 and 47,071.43 is: 64,959.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,310.21 : 117,729.30 = 47,071.43 : x
  2. Step 2: Convert to fraction form
    85,310.21/117,729.30 = 47,071.43/x
  3. Step 3: Cross multiply
    85,310.21x = 117,729.30 × 47,071.43
  4. Step 4: Simplify right side
    85,310.21x = 5,541,686,503.90
  5. Step 5: Solve for x
    x = 5,541,686,503.90/85,310.21
  6. Step 6: Final answer
    x = 64,959.24

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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.