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Finding the Fourth Proportional to 54,937.70, 82,406.55 and 13,384.70

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Solution

The fourth proportional to 54,937.70, 82,406.55 and 13,384.70 is: 20,077.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,937.70 : 82,406.55 = 13,384.70 : x
  2. Step 2: Convert to fraction form
    54,937.70/82,406.55 = 13,384.70/x
  3. Step 3: Cross multiply
    54,937.70x = 82,406.55 × 13,384.70
  4. Step 4: Simplify right side
    54,937.70x = 1,102,986,949.79
  5. Step 5: Solve for x
    x = 1,102,986,949.79/54,937.70
  6. Step 6: Final answer
    x = 20,077.05

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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.