Home / 47,381.28-71,063.32-12,318.76

Finding the Fourth Proportional to 47,381.28, 71,063.32 and 12,318.76

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Solution

The fourth proportional to 47,381.28, 71,063.32 and 12,318.76 is: 18,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,381.28 : 71,063.32 = 12,318.76 : x
  2. Step 2: Convert to fraction form
    47,381.28/71,063.32 = 12,318.76/x
  3. Step 3: Cross multiply
    47,381.28x = 71,063.32 × 12,318.76
  4. Step 4: Simplify right side
    47,381.28x = 875,411,983.88
  5. Step 5: Solve for x
    x = 875,411,983.88/47,381.28
  6. Step 6: Final answer
    x = 18,475.90

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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.