Home / 72,021,237.12-99,389,299.52-38,981,480.90

Finding the Fourth Proportional to 72,021,237.12, 99,389,299.52 and 38,981,480.90

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Solution

The fourth proportional to 72,021,237.12, 99,389,299.52 and 38,981,480.90 is: 53,794,439.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021,237.12 : 99,389,299.52 = 38,981,480.90 : x
  2. Step 2: Convert to fraction form
    72,021,237.12/99,389,299.52 = 38,981,480.90/x
  3. Step 3: Cross multiply
    72,021,237.12x = 99,389,299.52 × 38,981,480.90
  4. Step 4: Simplify right side
    72,021,237.12x = 3,874,342,080,503,766.50
  5. Step 5: Solve for x
    x = 3,874,342,080,503,766.50/72,021,237.12
  6. Step 6: Final answer
    x = 53,794,439.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.