Home / 31,590,623.20-47,385,934.80-20,631,128.80

Finding the Fourth Proportional to 31,590,623.20, 47,385,934.80 and 20,631,128.80

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Solution

The fourth proportional to 31,590,623.20, 47,385,934.80 and 20,631,128.80 is: 30,946,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,590,623.20 : 47,385,934.80 = 20,631,128.80 : x
  2. Step 2: Convert to fraction form
    31,590,623.20/47,385,934.80 = 20,631,128.80/x
  3. Step 3: Cross multiply
    31,590,623.20x = 47,385,934.80 × 20,631,128.80
  4. Step 4: Simplify right side
    31,590,623.20x = 977,625,324,167,202.25
  5. Step 5: Solve for x
    x = 977,625,324,167,202.25/31,590,623.20
  6. Step 6: Final answer
    x = 30,946,693.20

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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.