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Finding the Fourth Proportional to 68,844.30, 103,485.15 and 64,907.70

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Solution

The fourth proportional to 68,844.30, 103,485.15 and 64,907.70 is: 97,567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,844.30 : 103,485.15 = 64,907.70 : x
  2. Step 2: Convert to fraction form
    68,844.30/103,485.15 = 64,907.70/x
  3. Step 3: Cross multiply
    68,844.30x = 103,485.15 × 64,907.70
  4. Step 4: Simplify right side
    68,844.30x = 6,716,983,070.66
  5. Step 5: Solve for x
    x = 6,716,983,070.66/68,844.30
  6. Step 6: Final answer
    x = 97,567.74

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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.