Home / 68,721.29-103,065.83-38,748.45

Finding the Fourth Proportional to 68,721.29, 103,065.83 and 38,748.45

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Solution

The fourth proportional to 68,721.29, 103,065.83 and 38,748.45 is: 58,113.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,721.29 : 103,065.83 = 38,748.45 : x
  2. Step 2: Convert to fraction form
    68,721.29/103,065.83 = 38,748.45/x
  3. Step 3: Cross multiply
    68,721.29x = 103,065.83 × 38,748.45
  4. Step 4: Simplify right side
    68,721.29x = 3,993,641,160.46
  5. Step 5: Solve for x
    x = 3,993,641,160.46/68,721.29
  6. Step 6: Final answer
    x = 58,113.59

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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.