Home / 42,155.91-63,240.73-19,689.06

Finding the Fourth Proportional to 42,155.91, 63,240.73 and 19,689.06

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Solution

The fourth proportional to 42,155.91, 63,240.73 and 19,689.06 is: 29,536.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,155.91 : 63,240.73 = 19,689.06 : x
  2. Step 2: Convert to fraction form
    42,155.91/63,240.73 = 19,689.06/x
  3. Step 3: Cross multiply
    42,155.91x = 63,240.73 × 19,689.06
  4. Step 4: Simplify right side
    42,155.91x = 1,245,150,161.99
  5. Step 5: Solve for x
    x = 1,245,150,161.99/42,155.91
  6. Step 6: Final answer
    x = 29,536.79

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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.