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Finding the Fourth Proportional to 68,810.46, 103,069.88 and 51,985.14

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Solution

The fourth proportional to 68,810.46, 103,069.88 and 51,985.14 is: 77,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,810.46 : 103,069.88 = 51,985.14 : x
  2. Step 2: Convert to fraction form
    68,810.46/103,069.88 = 51,985.14/x
  3. Step 3: Cross multiply
    68,810.46x = 103,069.88 × 51,985.14
  4. Step 4: Simplify right side
    68,810.46x = 5,358,102,141.58
  5. Step 5: Solve for x
    x = 5,358,102,141.58/68,810.46
  6. Step 6: Final answer
    x = 77,867.55

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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.