Home / 30,899,849.58-42,622,396.21-18,332,006.40

Finding the Fourth Proportional to 30,899,849.58, 42,622,396.21 and 18,332,006.40

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Solution

The fourth proportional to 30,899,849.58, 42,622,396.21 and 18,332,006.40 is: 25,286,661.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,899,849.58 : 42,622,396.21 = 18,332,006.40 : x
  2. Step 2: Convert to fraction form
    30,899,849.58/42,622,396.21 = 18,332,006.40/x
  3. Step 3: Cross multiply
    30,899,849.58x = 42,622,396.21 × 18,332,006.40
  4. Step 4: Simplify right side
    30,899,849.58x = 781,354,040,359,301.50
  5. Step 5: Solve for x
    x = 781,354,040,359,301.50/30,899,849.58
  6. Step 6: Final answer
    x = 25,286,661.62

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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.