Home / 47,835.95-71,754.81-20,815.57

Finding the Fourth Proportional to 47,835.95, 71,754.81 and 20,815.57

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Solution

The fourth proportional to 47,835.95, 71,754.81 and 20,815.57 is: 31,223.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,835.95 : 71,754.81 = 20,815.57 : x
  2. Step 2: Convert to fraction form
    47,835.95/71,754.81 = 20,815.57/x
  3. Step 3: Cross multiply
    47,835.95x = 71,754.81 × 20,815.57
  4. Step 4: Simplify right side
    47,835.95x = 1,493,616,807.54
  5. Step 5: Solve for x
    x = 1,493,616,807.54/47,835.95
  6. Step 6: Final answer
    x = 31,223.73

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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.