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Finding the Fourth Proportional to 68,701.80, 94,810.56 and 38,487.04

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Solution

The fourth proportional to 68,701.80, 94,810.56 and 38,487.04 is: 53,113.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,701.80 : 94,810.56 = 38,487.04 : x
  2. Step 2: Convert to fraction form
    68,701.80/94,810.56 = 38,487.04/x
  3. Step 3: Cross multiply
    68,701.80x = 94,810.56 × 38,487.04
  4. Step 4: Simplify right side
    68,701.80x = 3,648,977,815.14
  5. Step 5: Solve for x
    x = 3,648,977,815.14/68,701.80
  6. Step 6: Final answer
    x = 53,113.28

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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.