Home / 40,986,509.19-61,441,929.90-20,498,400.38

Finding the Fourth Proportional to 40,986,509.19, 61,441,929.90 and 20,498,400.38

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Solution

The fourth proportional to 40,986,509.19, 61,441,929.90 and 20,498,400.38 is: 30,728,678.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,986,509.19 : 61,441,929.90 = 20,498,400.38 : x
  2. Step 2: Convert to fraction form
    40,986,509.19/61,441,929.90 = 20,498,400.38/x
  3. Step 3: Cross multiply
    40,986,509.19x = 61,441,929.90 × 20,498,400.38
  4. Step 4: Simplify right side
    40,986,509.19x = 1,259,461,278,800,391.75
  5. Step 5: Solve for x
    x = 1,259,461,278,800,391.75/40,986,509.19
  6. Step 6: Final answer
    x = 30,728,678.87

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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.