Home / 47,721.60-71,582.40-45,907.20

Finding the Fourth Proportional to 47,721.60, 71,582.40 and 45,907.20

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Solution

The fourth proportional to 47,721.60, 71,582.40 and 45,907.20 is: 68,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,721.60 : 71,582.40 = 45,907.20 : x
  2. Step 2: Convert to fraction form
    47,721.60/71,582.40 = 45,907.20/x
  3. Step 3: Cross multiply
    47,721.60x = 71,582.40 × 45,907.20
  4. Step 4: Simplify right side
    47,721.60x = 3,286,147,553.28
  5. Step 5: Solve for x
    x = 3,286,147,553.28/47,721.60
  6. Step 6: Final answer
    x = 68,860.80

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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.