Home / 39,820.80-59,666.40-33,211.20

Finding the Fourth Proportional to 39,820.80, 59,666.40 and 33,211.20

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Solution

The fourth proportional to 39,820.80, 59,666.40 and 33,211.20 is: 49,762.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.80 : 59,666.40 = 33,211.20 : x
  2. Step 2: Convert to fraction form
    39,820.80/59,666.40 = 33,211.20/x
  3. Step 3: Cross multiply
    39,820.80x = 59,666.40 × 33,211.20
  4. Step 4: Simplify right side
    39,820.80x = 1,981,592,743.68
  5. Step 5: Solve for x
    x = 1,981,592,743.68/39,820.80
  6. Step 6: Final answer
    x = 49,762.76

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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.