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Finding the Fourth Proportional to 56,992.80, 85,481.10 and 19,554.60

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Solution

The fourth proportional to 56,992.80, 85,481.10 and 19,554.60 is: 29,329.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,992.80 : 85,481.10 = 19,554.60 : x
  2. Step 2: Convert to fraction form
    56,992.80/85,481.10 = 19,554.60/x
  3. Step 3: Cross multiply
    56,992.80x = 85,481.10 × 19,554.60
  4. Step 4: Simplify right side
    56,992.80x = 1,671,548,718.06
  5. Step 5: Solve for x
    x = 1,671,548,718.06/56,992.80
  6. Step 6: Final answer
    x = 29,329.12

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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.