Home / 61,611.06-91,970.88-54,137.70

Finding the Fourth Proportional to 61,611.06, 91,970.88 and 54,137.70

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Solution

The fourth proportional to 61,611.06, 91,970.88 and 54,137.70 is: 80,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,611.06 : 91,970.88 = 54,137.70 : x
  2. Step 2: Convert to fraction form
    61,611.06/91,970.88 = 54,137.70/x
  3. Step 3: Cross multiply
    61,611.06x = 91,970.88 × 54,137.70
  4. Step 4: Simplify right side
    61,611.06x = 4,979,091,910.18
  5. Step 5: Solve for x
    x = 4,979,091,910.18/61,611.06
  6. Step 6: Final answer
    x = 80,814.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.