Home / 47,668,888.80-71,512,664.40-20,375,128.80

Finding the Fourth Proportional to 47,668,888.80, 71,512,664.40 and 20,375,128.80

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Solution

The fourth proportional to 47,668,888.80, 71,512,664.40 and 20,375,128.80 is: 30,566,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,668,888.80 : 71,512,664.40 = 20,375,128.80 : x
  2. Step 2: Convert to fraction form
    47,668,888.80/71,512,664.40 = 20,375,128.80/x
  3. Step 3: Cross multiply
    47,668,888.80x = 71,512,664.40 × 20,375,128.80
  4. Step 4: Simplify right side
    47,668,888.80x = 1,457,079,747,981,175
  5. Step 5: Solve for x
    x = 1,457,079,747,981,175/47,668,888.80
  6. Step 6: Final answer
    x = 30,566,681.64

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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.