Home / 31,521,661.20-47,282,491.80-20,751,123.60

Finding the Fourth Proportional to 31,521,661.20, 47,282,491.80 and 20,751,123.60

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Solution

The fourth proportional to 31,521,661.20, 47,282,491.80 and 20,751,123.60 is: 31,126,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,521,661.20 : 47,282,491.80 = 20,751,123.60 : x
  2. Step 2: Convert to fraction form
    31,521,661.20/47,282,491.80 = 20,751,123.60/x
  3. Step 3: Cross multiply
    31,521,661.20x = 47,282,491.80 × 20,751,123.60
  4. Step 4: Simplify right side
    31,521,661.20x = 981,164,831,457,786.50
  5. Step 5: Solve for x
    x = 981,164,831,457,786.50/31,521,661.20
  6. Step 6: Final answer
    x = 31,126,685.40

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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.