Home / 105,335.87-145,363.49-57,589.20

Finding the Fourth Proportional to 105,335.87, 145,363.49 and 57,589.20

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Solution

The fourth proportional to 105,335.87, 145,363.49 and 57,589.20 is: 79,473.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,335.87 : 145,363.49 = 57,589.20 : x
  2. Step 2: Convert to fraction form
    105,335.87/145,363.49 = 57,589.20/x
  3. Step 3: Cross multiply
    105,335.87x = 145,363.49 × 57,589.20
  4. Step 4: Simplify right side
    105,335.87x = 8,371,367,098.31
  5. Step 5: Solve for x
    x = 8,371,367,098.31/105,335.87
  6. Step 6: Final answer
    x = 79,473.09

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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.