Home / 78,421.53-117,599.49-31,029.24

Finding the Fourth Proportional to 78,421.53, 117,599.49 and 31,029.24

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Solution

The fourth proportional to 78,421.53, 117,599.49 and 31,029.24 is: 46,530.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,421.53 : 117,599.49 = 31,029.24 : x
  2. Step 2: Convert to fraction form
    78,421.53/117,599.49 = 31,029.24/x
  3. Step 3: Cross multiply
    78,421.53x = 117,599.49 × 31,029.24
  4. Step 4: Simplify right side
    78,421.53x = 3,649,022,799.09
  5. Step 5: Solve for x
    x = 3,649,022,799.09/78,421.53
  6. Step 6: Final answer
    x = 46,530.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.