Home / 78,049.44-117,087.84-31,302.72

Finding the Fourth Proportional to 78,049.44, 117,087.84 and 31,302.72

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Solution

The fourth proportional to 78,049.44, 117,087.84 and 31,302.72 is: 46,959.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,049.44 : 117,087.84 = 31,302.72 : x
  2. Step 2: Convert to fraction form
    78,049.44/117,087.84 = 31,302.72/x
  3. Step 3: Cross multiply
    78,049.44x = 117,087.84 × 31,302.72
  4. Step 4: Simplify right side
    78,049.44x = 3,665,167,870.92
  5. Step 5: Solve for x
    x = 3,665,167,870.92/78,049.44
  6. Step 6: Final answer
    x = 46,959.57

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1.5x scale

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.