Home / 75,611.80-113,385.30-31,223.80

Finding the Fourth Proportional to 75,611.80, 113,385.30 and 31,223.80

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Solution

The fourth proportional to 75,611.80, 113,385.30 and 31,223.80 is: 46,822.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,611.80 : 113,385.30 = 31,223.80 : x
  2. Step 2: Convert to fraction form
    75,611.80/113,385.30 = 31,223.80/x
  3. Step 3: Cross multiply
    75,611.80x = 113,385.30 × 31,223.80
  4. Step 4: Simplify right side
    75,611.80x = 3,540,319,930.14
  5. Step 5: Solve for x
    x = 3,540,319,930.14/75,611.80
  6. Step 6: Final answer
    x = 46,822.32

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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.