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Finding the Fourth Proportional to 68,751.90, 102,952.80 and 45,307.26

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Solution

The fourth proportional to 68,751.90, 102,952.80 and 45,307.26 is: 67,845.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,751.90 : 102,952.80 = 45,307.26 : x
  2. Step 2: Convert to fraction form
    68,751.90/102,952.80 = 45,307.26/x
  3. Step 3: Cross multiply
    68,751.90x = 102,952.80 × 45,307.26
  4. Step 4: Simplify right side
    68,751.90x = 4,664,509,277.33
  5. Step 5: Solve for x
    x = 4,664,509,277.33/68,751.90
  6. Step 6: Final answer
    x = 67,845.53

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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.