Home / 47,379.84-71,086.08-21,102.72

Finding the Fourth Proportional to 47,379.84, 71,086.08 and 21,102.72

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Solution

The fourth proportional to 47,379.84, 71,086.08 and 21,102.72 is: 31,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,379.84 : 71,086.08 = 21,102.72 : x
  2. Step 2: Convert to fraction form
    47,379.84/71,086.08 = 21,102.72/x
  3. Step 3: Cross multiply
    47,379.84x = 71,086.08 × 21,102.72
  4. Step 4: Simplify right side
    47,379.84x = 1,500,109,642.14
  5. Step 5: Solve for x
    x = 1,500,109,642.14/47,379.84
  6. Step 6: Final answer
    x = 31,661.35

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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.