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Finding the Fourth Proportional to 68,395.72, 94,177.15 and 61,980.58

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Solution

The fourth proportional to 68,395.72, 94,177.15 and 61,980.58 is: 85,343.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,395.72 : 94,177.15 = 61,980.58 : x
  2. Step 2: Convert to fraction form
    68,395.72/94,177.15 = 61,980.58/x
  3. Step 3: Cross multiply
    68,395.72x = 94,177.15 × 61,980.58
  4. Step 4: Simplify right side
    68,395.72x = 5,837,154,734.95
  5. Step 5: Solve for x
    x = 5,837,154,734.95/68,395.72
  6. Step 6: Final answer
    x = 85,343.86

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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.