Home / 42,122.84-58,138.62-28,726.07

Finding the Fourth Proportional to 42,122.84, 58,138.62 and 28,726.07

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Solution

The fourth proportional to 42,122.84, 58,138.62 and 28,726.07 is: 39,648.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,122.84 : 58,138.62 = 28,726.07 : x
  2. Step 2: Convert to fraction form
    42,122.84/58,138.62 = 28,726.07/x
  3. Step 3: Cross multiply
    42,122.84x = 58,138.62 × 28,726.07
  4. Step 4: Simplify right side
    42,122.84x = 1,670,094,067.82
  5. Step 5: Solve for x
    x = 1,670,094,067.82/42,122.84
  6. Step 6: Final answer
    x = 39,648.18

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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.