Home / 47,428.11-71,131.23-21,118.50

Finding the Fourth Proportional to 47,428.11, 71,131.23 and 21,118.50

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Solution

The fourth proportional to 47,428.11, 71,131.23 and 21,118.50 is: 31,672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,428.11 : 71,131.23 = 21,118.50 : x
  2. Step 2: Convert to fraction form
    47,428.11/71,131.23 = 21,118.50/x
  3. Step 3: Cross multiply
    47,428.11x = 71,131.23 × 21,118.50
  4. Step 4: Simplify right side
    47,428.11x = 1,502,184,880.76
  5. Step 5: Solve for x
    x = 1,502,184,880.76/47,428.11
  6. Step 6: Final answer
    x = 31,672.88

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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.