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Finding the Fourth Proportional to 57,457.15, 86,185.73 and 56,485.15

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Solution

The fourth proportional to 57,457.15, 86,185.73 and 56,485.15 is: 84,727.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,457.15 : 86,185.73 = 56,485.15 : x
  2. Step 2: Convert to fraction form
    57,457.15/86,185.73 = 56,485.15/x
  3. Step 3: Cross multiply
    57,457.15x = 86,185.73 × 56,485.15
  4. Step 4: Simplify right side
    57,457.15x = 4,868,213,604.48
  5. Step 5: Solve for x
    x = 4,868,213,604.48/57,457.15
  6. Step 6: Final answer
    x = 84,727.73

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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.