Home / 47,815.20-71,722.80-39,358.80

Finding the Fourth Proportional to 47,815.20, 71,722.80 and 39,358.80

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Solution

The fourth proportional to 47,815.20, 71,722.80 and 39,358.80 is: 59,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,815.20 : 71,722.80 = 39,358.80 : x
  2. Step 2: Convert to fraction form
    47,815.20/71,722.80 = 39,358.80/x
  3. Step 3: Cross multiply
    47,815.20x = 71,722.80 × 39,358.80
  4. Step 4: Simplify right side
    47,815.20x = 2,822,923,340.64
  5. Step 5: Solve for x
    x = 2,822,923,340.64/47,815.20
  6. Step 6: Final answer
    x = 59,038.20

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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.