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Finding the Fourth Proportional to 57,956.30, 86,885.85 and 30,254.30

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Solution

The fourth proportional to 57,956.30, 86,885.85 and 30,254.30 is: 45,356.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,956.30 : 86,885.85 = 30,254.30 : x
  2. Step 2: Convert to fraction form
    57,956.30/86,885.85 = 30,254.30/x
  3. Step 3: Cross multiply
    57,956.30x = 86,885.85 × 30,254.30
  4. Step 4: Simplify right side
    57,956.30x = 2,628,670,571.66
  5. Step 5: Solve for x
    x = 2,628,670,571.66/57,956.30
  6. Step 6: Final answer
    x = 45,356.08

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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.