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Finding the Fourth Proportional to 57,995.20, 86,992.80 and 39,563.20

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Solution

The fourth proportional to 57,995.20, 86,992.80 and 39,563.20 is: 59,344.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,995.20 : 86,992.80 = 39,563.20 : x
  2. Step 2: Convert to fraction form
    57,995.20/86,992.80 = 39,563.20/x
  3. Step 3: Cross multiply
    57,995.20x = 86,992.80 × 39,563.20
  4. Step 4: Simplify right side
    57,995.20x = 3,441,713,544.96
  5. Step 5: Solve for x
    x = 3,441,713,544.96/57,995.20
  6. Step 6: Final answer
    x = 59,344.80

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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.