Home / 47,711.70-71,603.10-18,187.20

Finding the Fourth Proportional to 47,711.70, 71,603.10 and 18,187.20

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Solution

The fourth proportional to 47,711.70, 71,603.10 and 18,187.20 is: 27,294.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,711.70 : 71,603.10 = 18,187.20 : x
  2. Step 2: Convert to fraction form
    47,711.70/71,603.10 = 18,187.20/x
  3. Step 3: Cross multiply
    47,711.70x = 71,603.10 × 18,187.20
  4. Step 4: Simplify right side
    47,711.70x = 1,302,259,900.32
  5. Step 5: Solve for x
    x = 1,302,259,900.32/47,711.70
  6. Step 6: Final answer
    x = 27,294.35

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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.