Home / 45,390.18-68,085.77-13,805.38

Finding the Fourth Proportional to 45,390.18, 68,085.77 and 13,805.38

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Solution

The fourth proportional to 45,390.18, 68,085.77 and 13,805.38 is: 20,708.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,390.18 : 68,085.77 = 13,805.38 : x
  2. Step 2: Convert to fraction form
    45,390.18/68,085.77 = 13,805.38/x
  3. Step 3: Cross multiply
    45,390.18x = 68,085.77 × 13,805.38
  4. Step 4: Simplify right side
    45,390.18x = 939,949,927.44
  5. Step 5: Solve for x
    x = 939,949,927.44/45,390.18
  6. Step 6: Final answer
    x = 20,708.22

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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.